Hi, I spent the last two nights trying to add a 200GB HD to my TiVo 540040, and wanted to share a pitfall that I spent a good deal of time looking for an answer to. I'll apologize in advance in case this has been discussed before, I could find a couple of posts with the same problem, but nothing that addressed the problem. After I booted up with the weaknees_lba_boot_cd (It successfully booted from the CD), It searched for my CD-ROM drive 5 times, then stated "No CD-ROM found". This left me with a VERY limited shell. I couldn't ls or anything, and there were like only 2 devices in /dev (I had to get a directory listing by utilizing the auto complete function: tab twice) What I discovered: the first ide device was starting at hde instead of hda. This was because I had an onboard promise RAID controller, and that is getting loaded before my primary IDE controller. I spent alot of time trying to disable the RAID controller in vain, because my first IDE device was still showing up as hde after I had the RAID controller disabled (not sure why). Anyways, I did a little more research to try to understand the problem more, and I stumbled across the kernel parameter "ide=reverse" which will swich the primary and secondary ide channels. I decided to give it a go, and it worked perfectly! I think that the "mount-cdrom" script in the cdrom only checks the first four ide devices, so I am not sure if weaknees wants to address this, or add a little commentary in their documents to explain how to get around this. At the lilo boot prompt (where it tells you to hit enter), I had to type: linux ide=reverse then follow the weaknees interactive upgrade instructions I hope this is helpful to at least one other person.