grub crc error after decompressing linux

Posted by w00t on Server Fault See other posts from Server Fault or by w00t
Published on 2010-06-13T01:25:41Z Indexed on 2010/06/13 1:33 UTC
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grub

Hi,
I have a debian with a raid1 on it. Both HDDs have bootable flags and grub setup in MBR. If I only start up with sda, linux boots. If I only start up with sdb, grub shows up and says

Decompressing Linux...
crc error
-- System halted

I have reinstalled grub a few times now but still nothing.
It goes like this:
/dev/md0 contains /dev/sda1 /dev/sdb1
find /boot/grub/stage1 shows (hd0,1) (hd0,1)
The line that boots Linux shows:
root (hd0,0)
kernel /vmlinuz-2.6.26-1-686
initrd /initrd.img-2.6.26-1-686

This kind of renders my "redundant" array useless.
Any clues?

update: just to mention, these are 2 different HDDs, sda is 320gb and sdb is 400gb. Both are WD and both have exactly the same partitions, cloned using sfdisk.

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