Well I guess you may have just answered a question I had.
I was able to get the system to work but in a different way. After booting and getting the hard drive error, rebooted with the DVD, ran the Remastersys installer, when Gparted started I had it only check the hard drive. Exited the installer and rebooted. System would not boot. Reinstalled the system and got the same hard drive error. Rebooted with the DVD and again tried Gparted and on reboot the system started. But seeing as how on previous installs the system would not reboot a second time, I then tried something that Glen suggested which was to download and install the kernels from his previous release which I did. After install of the older kernels and reboot all of the kernels including the latest that comes with AV 3 are working so far. Had I looked here to see your post, I could have saved myself some time by trying your solution but in a different way.
I have 3 OS's installed on different hard drives, don't like sharing drives, and because of the possibility of an OS installation hosing one of the other drives or me having a senior moment
and making a wrong selection or a stupid mouse click because I didn't read something during install, I always disconnect the other drives before installing and set them up in the new OS if need be after install.
So far so good on the current install, maybe I will get ambitious and do a reinstall and try fixing it similar to your solution but I'll just reconnect the drives and boot my other Linux installation to try and edit the fstab. Or if possible edit and save the fstab file to a flash drive and the hard drive before a reboot after installing.
Gotta say also, I like AVlinux a lot more than any of the other Linux multimedia versions that I have tried although not a big fan of LXDE. Guess a little hiccup every once in a while helps keep the braincells working.