I can boot fron knoppix. now what?

I upgraded (or tried to) my Debian box from Woody to Sarge. When I tried to reboot, LILO choked... from what I have gathered my best course of action is to use Knoppix to either repair LILO or install GRUB instead.

I am able to boot from the Knoppix CD.

I have tried doing several things like

Code:

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grub-install hd0

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where I got the following error

Quote:

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/sbin/grub-install: line 399: /usr/bin/uniq: input/output error
could not find device for /boot: Not found or not a block device

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I've tried mounting a filesystem to chroot to and get an error saying something to the effect of specifying a wrong type or filesystem... sorry can't remember exactly...

I also get an input/output error when trying to run programs like vi, less and tail.

I'm kind of at my wits end here. Any suggestions or direction would be greatly appreciated.