January 12, 2003

LTSP, DD, wireless and coffee

After I got Etherboot in to my BIOS, it was super-trivial to get a diskless Linux client that ran rdesktop using the stuff provided by the Linux Terminal Server Project.

I downloaded their RPMS and installed them. Nice neat installation into /opt/ltsp (with kernel in /tftpboot). I ran their ltsp_initialize script or some such and didn’t have it modify most of my system files since I wasn’t going to be using the diskless workstation for X. Opened up the TFTP server, allowed remote logging (I’m not quite sure this actually worked), modified dhcpd.conf a bit, and we’re off to the races.

Booting up the client worked first time. Popped me right in to X. When in runlevel 5, though, you don’t have a console on VC 1 or anything like that, so I couldn’t start any X clients. Instead I ended up modifying /etc/rc.local in the diskless client root (/opt/ltsp/i386) to run rdesktop from /tmp/start_ws, which is called by init when runlevel 5 is entered.

It’s easy to add parameters to lts.conf too, BTW. Just add your parameter in whatever section you’d like and just use the get_cfg program to read it. For example, I created a TERMINAL_SERVER parameter that I used as an argument to rdesktop.

No problems. A bit of trial and error to fix lil’ problems (don’t forget to run X in the background in start_ws if you intend to run an X client after it) and you’re off to the races. A big thank you to the guys working on LTSP; you’ve done a great job. If anyone wants more information on what I’ve done or to take a peek at my scripts, you may mail me.

In other news, I think I’m almost done with my Donnie Darko soundtrack. I re-ripped a DVD chapter yesterday on darkho’s laptop since I remembered that her Dell had a DVD drive in it. It’s cool that you can hot swap the floppy or the DVD drive into a slot. Installing the DVD utilities I needed was a snap since they’re not proper packages to begin with and they’re pretty contained into one directory. I just zipped up my DVD Tools directory and plopped it down on her laptop. Had to install PowerDVD and ASPI, but that’d have to be done eventually anyway so she could watch DVDs. I also accessed the resulting 50MB WAV file over the network (loaded in to Sound Forge) and let me tell you: it was fast. This give me hope for my coming IDE RAID array and fast network access.

Before I forget: Sound Forge 6.0 is way useful. I don’t think there were [m]any plug-in changes, and the interface isn’t drastically changed either from what I’ve seen. The big enhancement, though, is speed. Apparently I was wrong and SF 5.0 didn’t have “non-destructive editing.” A friend of mine compared non-destructive editing to the way an RDBMS keeps a journal. It doesn’t modify the file itself, but keeps kind of a journal of what has happened to the file until you save it out to disk. Result? Much faster operations, no creating undo apparently, faster saving, etc. Plus it appears to do most operations in the background now, so you can go work on another file while it’s processing the first, I think. Very nice.

I realized that last night I have no idea what else to work on when this soundtrack is done. I know I was working on DarkWiki there for a while, but I constantly have doubts if I’m not wasting my time on something that’ll never pan out to being a useful piece of software, if I’ve made the wrong choices, made it too complex — to the violation of “Wiki principles” — etc. I guess it’s so close to being done, or at least debugged, that I might as well have a go at it. Still have to fix interface.pm, though. I think I figured out a way that’d fix it, but I have to find my notes on it. They’re either here or in the source file. (I need to link the MT search application from these pages. Indeed I’ve looked at some of the archive pages and, for whatever reason, they’re looking damn ugly these days.)

Went to Caribou Coffee last night and was surprised to sit down right next to a Linksys WET11. Set my Cisco to any ESSID and found a cariboueast ESSID. Woo hoo! Finally a local coffee shop with wireless Internet access. For some reason, though, I was having serious problems with my Cisco 802.11b card. I started with my Orinoco card, but took that out when my system strangely locked up after an attempt to dhcpcd eth1. With the Cisco card I couldn’t see to get a successful ARP for my gateway. After setting it statically Internet access seemed to be kind of iffy; for example, watching Ethereal I was seeing the beginning of an SSH session, but after that I never saw any packets for it at all. Even pinging the gateway (a Linksys router/wireless/switch combo I suspect) I was getting a lot of packet loss. I still don’t know what was going on, but when I switched back to my Orinoco card everything worked swimmingly. They’ve apparently installed Road Runner business class there. Strangely, I didn’t see any mention of the set up anywhere in the coffee house. Maybe it wasn’t ready for prime-time yet in their eyes. Or maybe I just wasn’t supposed to be using it. Oh well! That’ll teach you not to set WEP keys.

Sorry, I didn’t have any chalk on me.

January 9, 2003

Modifying your BIOS for fun and profit

I have just done something very perverse, and quite inexplicably it seems to be working.

I have an Amptron Eureka SD-4925A. More accurately, work has one. I’m charged with getting it to boot Linux from the network and run an RDP client (probably rdesktop). I’m told the machine has network booting capabilities. OK, no problem. I take it home and look at it.

It will boot off the network. Unfortunately its boot protocol is something called “Novell RPL.” This is different from “IBM RPL,” especially because IBM RPL is supported in Linux but Novell’s is not. (I think I read something to the effect of “Novell won’t release specs for RPL.”) This does not make me a happy dictator. So now my boss thinks I should give up and boot from floppy or CD-ROM. Floppy is unreliable, though, and I can’t update CD-ROM without physically replacing it.

Somehow I start reading about Etherboot which provides a sort of “boot ROM” for your computer. You can load it off a floppy disk, or… some people seem to be putting it to EEPROM. What’s this? Some people are putting it in Award BIOSes? Hm. Unfortunately I have an AMI BIOS (though the most recent revision for my board at Amptron’s site mysteriously seems to be an Award BIOS). Not many instructions on this.

Now I find an IRC log from #ltsp (LTSP being the Linux Terminal Server Project I believe) mentioning the fact that a person named Dave Anders has some utilities you can use to modify an AMI BIOS. I got on #ltsp and talked to him. He was the one that got me started on the correct path of evil that lead to using a modified BIOS.

WARNING: If you were to follow the instructions I’m spewing forth here, you may render your computer unusable, damaged, or even turn it in to an evil sentient being bent on the domination of the entire human race — starting with you. I am not responsible for broken equipment, damage, loss of data, hair, or erectile dysfunction. The instructions henceforth are what I did. I do not guarantee this will work for you. I’m still fucking shocked it worked for me. I make a lot of assumptions here based on what my system is like. For example, I have a PCI NIC (on-board).

You’ll need a plain DOS boot disk, and probably a second blank floppy to load two utilities and a BIOS image on to. Boot off the floppy and use B: when you’ve booted up. Then when it asks you to insert the floppy for B: (unless you’ve got two floppy drives) insert the disk with the utilities and BIOS image on it.

First, back up your BIOS. I had to use the AMINF332.EXE utility from Amptron’s BIOS page. The newest AMI flash utility wouldn’t work; something about “Chipset/part not available” when I ran it, IIRC. You probably need to do this from a plain DOS boot disk. The command line is something like: AMINF332.EXE /SBACKUP.ROM. This should save your current BIOS to BACKUP.ROM. When I did it the size of my BIOS images were always 262,144 bytes.

At this point, make a copy of BACKUP.ROM to another disk. Make several copies. If you fuck up, you’ll thank yourself.

You’ll need an Etherboot image for your card. The nice people at Etherboot (I think they’re responsible) created http://www.rom-o-matic.net/ to help you create a boot ROM. You want to make a binary image; it’ll have an extension of .lzrom. If you don’t know what kind of Ethernet card you have, like I didn’t, I recommend the following: boot in to Linux. I used a Linuxcare Bootable Business CD-ROM I had lying about, but anything that you can run lspci on should do. Find the device and vendor IDs for your Ethernet card. In my case, for example, lspci showed me an Ethernet controller on 00:12.0 or something like that. Then you can do an lspci -n and find the numbers after “Class XXXX” (where XXXX is four hexadecimal digits). These will be in the format (at least on my machine) of “VVVV:DDDD” where VVVV is the vendor ID and DDDD is the device ID. You can check someplace like the Etherboot list of supported hardware, or a similar source from the latest version available on http://www.rom-o-matic.net/. I find “0×1106,0×3065″, look up in the list, and spot “family via-rhine”. That’s the “NIC/ROM type” I need to use on http://www.rom-o-matic.net/. Save the resulting ROM to your floppy disk.

Now you’ll need to put the utility AMIBCP.EXE on a floppy. Next run AMIBCP.EXE BACKUP.ROM. (You’d better have a copy of BACKUP.ROM elsewhere!) You’ll get a nice menu-driven interface, DOS-style. Select “Edit BIOS Modules”.

Here’s the tricky part. At the bottom right-ish corner it says “Available Memory” (well, actually, it says “Availabel Memory”, but you get the idea) and to the right of that in parenthesis is the number of bytes remaining. You’re going to need enough available memory to insert your Etherboot ROM. To find out how much space it’s going to need, first press the insert key and type in the name of your Etherboot image file. The next screen should be “Change Module Characteristics”. For “Module ID” it should say something like “20h PCI AddOn ROM”. Use the arrow keys to move down to “Compressed” and press the plus key (+) to change that to “yes”. Now look up a couple lines at the value in the parenthesis after “Module Size”. This is how much available memory you’re going to need. For example, in my case I was going to need 14,518 bytes. Press the escape key twice to get back to the “Edit BIOS Modules” screen. Now if you don’t have enough available memory you’ll need to delete some things.

I got lucky with deleting modules. I found another module which was a “PCI AddOn ROM” and had “3065:1106″ listed in the right-most column. I now presume this was the old Novell RPL boot code for the network card. I deleted this and had plenty of space. The only other things I’m somewhat certain can be deleted is something like “OEM Logo” or “EPA / OEM Logo”. I’m not even real sure about this, but Dave Anders was able to do this in his case. I also note that, back from the main menu, I could select “Configure BIOS Options”, then scroll down to the bottom of the list and disable “Display AMI Logo” and “Display OEM Logo”. If you have to delete the OEM logo from the BIOS, you may want to turn off both of these options. I’ll also note that I read somewhere that you should not delete the “Image Display Code” (or “Image Dsiplay Code” as it appears in my BIOS); I don’t know if this is still valid.

Once you have enough space, do what we did before to check the size of the Etherboot ROM: press insert, enter the file name of the Etherboot ROM, change “Compressed” to “yes”. Instead of pressing escape twice to get back to the “Edit BIOS Modules” screen, though, press F10 to save these changes. It may ask you to confirm, which I think requires to press enter to confirm. You should see your new “PCI AddOn ROM” at the bottom of the list. Now press escape to go to the main menu and select “Save BIOS To Disk File”. I just overwrote my BACKUP.ROM because there wasn’t enough disk space to write a new ROM AFAIK.

Once you’re done with that, exit the AMIBCP utility. Now it’s time to flash your ROM file back up to the motherboard. Type AMINF332 YOUR.ROM /A where YOUR.ROM is whatever you saved your ROM as in AMIBCP, above. For example, I saved my ROM back out to BACKUP.ROM, so I’d type AMINF332 BACKUP.ROM /A. This should flash your computer then immediately reboot. When you reboot, enter the CMOS settings; in my case it asked me to go in to setup anyway, because in the process of flashing I guess your settings are erase. I loaded optimal settings and then went in to select boot devices. On my BIOS, a selection called “via-rhine.lz” or some such showed up. I selected this as the third boot device, behind floppy disk and CD-ROM. Save and exit with your BIOS parameters. Let your computer get to the point of trying to boot off the network. You should see something about “Etherboot” come up. Voila!

Just that easy. I’m fucking stunned this worked. All props to Dave Anders, without whom I probably would have given up, and the Etherboot team for making something so bizarre and useful so easy.

More reports on if this really works once I get a bootable image up and such. I can see my DHCP server responding already, but it’s not sending any boot image information out so I don’t expect Etherboot cares about the replies.

DD soundtrack, octaves, P2P, hard disks

Too long between web log entries. All because darkbook was powered off and packed up. Bad darky.

Of course, the chief reason the laptop didn’t get unpacked is because I’ve been working on my Donnie Darko soundtrack some more. It’s coming along. I learned all about dynamic compression in audio. (Unfortunately I can’t find any of the sites I visited on this topic originally. Search using words and phrases like “mastering” and “dynamic compression” perhaps.) I’m trying to leave the audio alone as much as possible. I find myself bringing up the low and high ends of the tracks that I found on the Internet (all the music tracks that weren’t on the score) with a graphic EQ though. Compressing some of the sound clips from the movie helps the CD to sound more consistent WRT volume level I think.

I’ll take this time to mention a problem I had. I wanted to apply band dynamic compression to a track. In case I’m using the wrong terms, by “band dynamic compression” I mean compressing only a certain set of frequencies (or at least that’s how it looks to me). I knew human voice, at least for talking, ran between 300Hz to 3.3KHz from P.J. (I didn’t check this, so it might be wrong.) However, the band for the filter in Sound Forge 5 is selected with a center frequency and a band width measured in octaves. There are standard octaves, but that doesn’t really apply here. Also, the plug-in let you select a fractional octave. Note that the plug-in apparently does not let you select a band width higher than three octaves, though. So between scott and I we were able to come up with equations that (we think) solve the problem: turning a range of frequencies into a center frequency with a width in octaves. r = log2(u/l) where r is the range in octaves, u is the upper frequency of the range, l is the lower frequency of the range, and log2 is a base two logarithm. All frequencies are given in Hz. For example, for the frequency range of 300Hz to 3.3KHz, the result is a width of about 3.46 octaves. Since the plug-in was limited to three octaves, I graphed y = x * 2^3 which makes x the low end of the frequency range and y the high end of the frequency range. This way I could quickly move along the graph and find a new frequency range that was suitable. The center frequency of a frequency range that is to be used in a center/octave range can be determined with c = sqrt(u*l) where u and l are as above, c is the center frequency, and sqrt is a square root function. Again, all frequencies are in Hz. For example, for the end range I picked of 400Hz to 3.2KHz, the center frequency is about 1131Hz.

I’ll take a brief moment here to plug Emu48, an HP 48SX/GX emulator. Also on that page (http://www.hpcalc.org/) you can find HP 48SX/GX ROMs, and somewhere on the site is apparently the entire HP 48 GX user manual converted to PDF. I’ve been using this as my desktop calculator and I’m totally hooked. It’s certainly more powerful than my TI-85, and I would almost suppose that it’s more powerful than a TI-89. I’d probably say it’s easier to use than a TI-89, too, but I’m weird like that. Too bad these calculators – though I suspect they’re no longer made — are still so expensive. I at least wish I had a PDA that could an emulator for it, like a WinCE device (except… I’m not sure I’d run WinCE, even for that; I bet I could make it run in Linux on a PDA) or a Sony Clie, which can apparently run some version of an emulator so far.

Let me take a moment to plug Sonic Foundry‘s Noise Reduction DX 2.0 plug-in set. These things work great. Of something like 11 copies of Tears for Fears’ “Head Over Heels” I found on the Internet, I think every single one of them had a click at about 9s in to the song. I had almost given up hope when I rand it through the Click Removal plug-in. In about two minutes I had tweaked the params and removed the click completely to my satisfaction. I’ve also been using the noise reduction plug-in on some of the clips I took from the movie. At first I thought it was distorting the vocals, but after tinkering for 15m or so (hint: try mode 3) I was satisfied. I think the voices do sound a bit weird, especially in headphones, but I don’t think they necessarily sound any weirder than they already do on the CD. Plus (I believe) both plug-ins have the ability to let you hear what they’re discarding. Recommended.

CD Architect 5 continues to annoy me a bit. I was playing with Event FX to add EQ and/or compression to tracks. However, the normalization function of CD Architect doesn’t take the result of Event FX in to account when calculating the gain that needs to be applied to a track. At first I was just playing the song through, watching to see if the meters clipped and if so, by how much. Then I’d just adjust, for example, the EQ’s output gain down by whatever I needed to get -0.10dB. More recently, though, I’ve been taking advantage of CD Architect’s ability to make multiple takes of a track. You can right click a track and select “Open a copy in Sound Forge.” This will create a copy of the track with “Take N” (where N is a number >= 2) appended to the file name and open it in Sound Forge. Now you can apply the effects in Sound Forge, then just normalize it out yourself. If you decide you don’t like it, just close the file and copy over it from the original take. (Nitpick: when you open a copy of “Foo Take 5.wav” it makes “Foo Take 5 Take 2.wav”.) Not so bad. I’ve been getting along with it.

I’ve been getting some feedback on the soundtrack, and I appreciate it. I’m trying to respond to it wherever possible.

I was playing with KaZaA for the past 24h or so. Hint: KaZaA sucks for MP3s, rules for other things. Like, say, for example — just an example, of course — finding software. With this I also installed Kazoom which is a little program that basically combs over all your downloads at a configured interval and tells KaZaA to search for other people you can download from simultaneously. Warning: Kazoom includes ad-ware out the yin yang. I suggest four things after installation: (1) msconfig and remove all the stuff it wants to run at start up; (2) go to “Add/Remove Programs” and delete all the stuff that it put in there; (3) remove the stupid icons off your desktop (thankfully few of them); (4) download and run Ad-Aware.

I was a bit concerned at my low participation rating. Reading up on this in KaZaA documentation, apparently people with higher participation ratings get priority in downloads. I was originally only sharing something like 350 files including a bunch of MP3 files and some MP3 albums (high-quality releases). I was only at “Low (12)” or something. Apparently there are two ways to increase your rating according to the documentation: share more files, and giving files integrity ratings and proper metadata. I decided to give a go at sharing files first, so I decided to share my download directory. Wham, now I’m sharing 21,000 files or so, including a bunch of software, NES ROMs, etc. Still no increase. I go to try and rate some files and find the interface horribly, terribly, unusably slow. I rated about 20 files before I gave up; the process of doing those 20 files probably took me 10 minutes.

I am then told by Andy the Benevolent that there exist KaZaA hacks to raise your participation level. At this time I will make this plea to the reader: please share! I only ran such a hack after sharing pretty much everything I had that would have been of use on my hard disk. Don’t be a total leech, not when it’s so easy to share. (As I was writing this I realized I had closed KaZaA. I’ve since re-opened it, solely for people to download from me.) Kazaa Hack 2.0.2 apparently runs against KaZaA or KaZaA Lite. It takes a little while to show up in KaZaA, but if you click the skyrocket button, leave it running for a while (say 5-10m maybe), then click “Freeze” and close the hack, KaZaA will probably update your participation rating within 10m or so. At least, this is how I did it, and I’m now “Supreme Being (1000)”. Note that after increasing my user level, my downloads increased in speed by a factor of 15 or so.

Finally, I went out and blew $800 tonight on five Maxtor 120GB 2MB cache ATA/133 FDB drives and two controllers. BTW, FDB apparently stands for “fluid dynamic bearings,” which I think translates to “quiet drives.” I was considering the Western Digital 120GB 8MB cache ATA/100 drives, but they were slightly more expensive than the Maxtor drives, I’m told by a knowledgeable and trustworthy source that the Maxtor drives are good, and the performance should be near enough what I need it to be. It was difficult to decide between cache and speed. (Maxtor makes an ATA/133 drive that has 8MB cache, but it’s out of my price range. AFAIK, WD makes no ATA/100 drives.) Here’s a comparison of two WD 120GB drives, one with 2MB cache and one with 8MB cache. Here’s someone comparing ATA/100 drive(s) vs. ATA/133 drive(s), though this article has more of a focus on RAID. Then there’s a person that I don’t know making a specific comment about the trade-offs between speed and cache. In the end I just said “fuck it” and bought from Googlegear who had the best price. Incidentally, they also had the Highpoint Rocket133 two channel controllers I wanted. Even better, they’re going to ship it all two day for cheap, it seems; some sort of sale they’re having. If it’s all in stock and ships by Friday, I could have it by next Tuesday. Oh fuck. I just realized that I bet I’ll be hard pressed to find a motherboard with on-board ATA/133. I bet I need another Highpoint controller. I should have just gotten one to begin with. Then I’ll have to procure a faster processor (faster than the 500MHz I have lying about) and probably a motherboard to go with it, and maybe a case big enough to hold six drives and a CD-RW (the Cendyne, I think). One with enough power supply. Eek. This is getting more expensive as I talk about it. I’ll try and get Googlegear to modify the order I guess. Lets see how the customer service goes.

I’m going to try and contact them via e-mail then go to sleep. I would like to be in bed before sunrise tonight, I think. More tinkering with box that needs to boot Linux from the network tomorrow.

January 4, 2003

Cheap CD-RW drives, FLAC, antenna revelations

I think there was a bunch I wanted to write about. By now I’ve forgotten a lot of it, I think. It’s more of a feeling.

Over the past week we’ve been on a quest for cheap CD-RW drives at OfficeMax. They advertised an I/O Magic 48x16x48 (48x CD-R, 16x CD-RW, 48x read) CD-RW drive for about $20 after rebates. They ran out of stock of the I/O Magic drives pretty quickly, but since they apparently have to provide the drive for the lifetime of the sales flyer’s prices (from the previous Sunday to the next Saturday, one week) they have “alternatives.” The first alternative they’d give out to the I/O Magic drive was a Pacific Digital 48x12x48. This drive is obviously slower at CD-RW, but to even this out it’s $20 without having to do any rebates. The second alternative was a Cendyne 48x12x48. Still slower, and it probably costs more up front since I think it has a larger mail-in rebate than the I/O Magic. Note that the end price is the same on all these drives: $20 after rebates, if any.

I decided to find out about the features of these drives. I checked CloneCD’s site first for information. I also found cdfreaks.com quite helpful, often returning hits from Google. Andy McFadden’s CD-Recordable FAQ was also of some use in identifying the drives. You see, these drives often aren’t made by the name on the box. They’re remarked drives from other equipment manufacturers. I don’t know what the I/O Magic drive is, but I didn’t look very hard. The Pacific Digital drive is a Lite-On LTR-48125W, which is a featureful drive according to CloneCD’s feature list and other sources on the Internet. These drives seem to be as quality as they get for the price.

Then there’s the Cendyne burner. Cendyne decided to make it real tough by including one of at least three (and probably more like four or five; I heard BenQ burners mentioned a bunch) different burners in the same box. These burners are the OptoRite CW 4802 (48x16x48), an A/Open 48x12x50, and the Lite-On LTR-48125W mentioned above. The OptoRite CW 4802 seems to be widely criticized out on the Internet. The A/Open doesn’t sound much better. The Lite-On is the best of the three it seems. The good news is that the Cendyne drives have a big sticker on the back that has a “Drive Model” portion. This portion will say “CW 4802″ for the OptoRite, “LTR-48125W” (or similar) for the Lite-On, and the pictured sticker is for the A/Open. Of the five or so OfficeMax stores I called they all seemed to be willing to look through their drives for ones that had a model number beginning with “LTR”. The bad news is that only one of those five stores had any, the rest having only OptoRite and/or A/Open drives.

Before I knew all this I went out and got a Cendyne drive. At the time I was actually happier to get a Cendyne drive than a Pacific Digital, despite the rebate details, because I thought they were all Lite-On drives; a sure thing, so-to-speak. When I got it home I was surprised to find the drive saying 48x16x48 on the front while the box said 48x12x48 in several places. Once I found out this was an OptoRite, and only one place in town had a Lite-On drive, I drove the 25m or so out there to pick one up. When I got there they said they only had Pacific Digital. I didn’t know anything about these drives at the time, and I couldn’t find anything tell-tale on the box, but it was $20 straight out so I took it.

There are about four differences I would say exist between these drives besides the speeds. First is media compatibility. The OptoRite drive wouldn’t write to my cheap media, but the Lite-On did – and that was before I installed new firmware which supposedly increased media compatibility. (More on flashing below.) Second, Mt. Rainier packet writing support. I don’t use packet writing, so I probably wouldn’t use this, but it might be of note to mention that the A/Open and OptoRite drives apparently don’t have this, while the Lite-On apparently does. Third, only the Lite-On drive supposedly has this “Smart-Burn” feature where it writes a bit slower but tries to check your media to make sure it’s getting written to correctly. Finally, apparently the OptoRite drive has problems with certain copy protections that the Lite-On does not.

Apparently the Lite-On I got had Pacific Digital-branded Lite-On firmware on it, and to upgrade to the latest Lite-On firmware I’d have to jump through some hoops. First I went to http://www.liteonit.com.tw/ to download the latest firmware for my drive, VS08 at the time. This provides you with a VS08.EXE file. Don’t run it you trigger-happy little bugger. Now go to http://www.liteon.notrix.net/ and download LITEFIRM2.EXE. This contains a utility that you run on VS08.EXE to get VS08.BIN. From that same page you can download MTKFLASH155.EXE or whatever the latest version of MTKFLASH is. This is a DOS-only utility to upgrade your firmware. I downloaded a boot disk from http://www.bootdisk.com/. Then try and follow the direction in OC-Freak’s MTKFLASH guide. You can ignore the bits in here about overclocking as that doesn’t apply to you with the above drive. Don’t forget to turn off DMA in your BIOS for the CD-RW drive before flashing, and don’t forget to back up your current firmware as recommended before flashing.

One more tip: if you can’t seem to write to your new CD-ROM fast enough, make sure you have DMA enabled in your BIOS (both the OptoRite and the Lite-On seem to do UDMA mode 2 at best) and also make sure you have the best drivers for your IDE controller/motherboard/motherboard chipset you can find. In my case I needed to install the “Intel Application Accelerator”, which is secretly busmastering IDE drivers for the 815E chipset (and some others, I believe). You can find these at Intel’s site. For the record, my motherboard is an Asus CUSL2-C BP.

In other news, I used FLAC for the first time last night. I was going to use Monkey’s Audio, but then I said, “why not use the free alternative?” I was using it in Windows to back-up my Donnie Darko soundtrack working WAV files. FLAC is command line oriented, but it has a couple of front-ends for Windows. It can also used with the Monkey’s Audio GUI as a front-end, which is what I ended up doing. Worked pretty well. I get the feeling FLAC doesn’t compress 24-bit 48KHz audio as well as 16-bit 44.1KHz audio. I saw only a 44% or so decrease in size. Still, it was enough to fit the FLAC files on to a single 80m CD. Glitch: the process of converting to FLAC loses all the markers I had set in the files. Solution: go through each file (yick) and do a “Save As”, telling it to put the markers in a separate .SFL file. I then burned my CD Architect project, the FLAC files, and the .SFL files where applicable, and now I have a backup. This means I can play with trimming, expanding, EQ, reordering tracks, and more without losing what work I’ve already done in some stupid mistake.

Took my Cantenna out to a potentially knowledgeable group of people tonight. They suggested a few reasons it didn’t work well:

  1. Use silver solder instead of rosin-core. Or something like that. This one wasn’t emphasized.

  2. The element can’t be touching the can. I didn’t know this one. It wasn’t in the how-to, I swear. They suggested I just drill the hole bigger. I’ll probably give that a whirl (with my new drill!).

  3. More solder between the N connector extrusion and the element (wire). I thought I had plenty. One or two people disagreed with this. I don’t really agree with this yet, but I might end up trying it. Hopefully only after I’ve enlarged the element’s hole and tested the antenna for improvements at that point. If I try adding more solder I might start with a hole new N connector; not sure yet.

So, there’s some ideas for improvement. I still want one of those obscenely-high-gain directional antennas from FA&B though, I think.