[SOLVED] GRUB error, possibly RAID-related, inability to boot
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GRUB error, possibly RAID-related, inability to boot
Hi,
I'm trying to get a laptop up and running. I've already nuked everything from orbit and paved over with, nominally, a fully-encrypted Ubuntu install, and when I rebooted off of the Live CD to try to load Ubuntu, it gave me a grub rescue screen.
So of course, I try the obvious:
grub rescue> ls
(hd0) (hd0,msdos1)
Attempting to ls into each of those gives me "error: unknown filesystem".
Attempting to run the boot-repair utility or the rescatux/grub fixer programs doesn't work. The latter gives me a long, unending chain of disk I/O errors and the former complains of there being a RAID and doesn't supply a button with which to even start the repair.
... halp? I have no idea what I'm doing at this point, having completely exhausted my own knowledge.
I can boot up from a LiveCD just fine, it's booting from the HDD's install that fails.
If there's any additional information I should supply, please let me know.
Warning: ignoring extra data in partition table 5
Warning: ignoring extra data in partition table 5
Warning: ignoring extra data in partition table 5
Warning: invalid flag 0xce78 of partition table 5 will be corrected by w(rite)
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003c590
Device Boot Start End Blocks Id System
/dev/sda1 512 500223 249856 83 Linux
/dev/sda2 500734 1953536511 976517889 5 Extended
/dev/sda5 ? 1818976495 2093463169 137243337+ 52 CP/M
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
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