Bug#664718: Info received (grub-pc 1.99-18: grub-setup: error: cannot read `/grub/core.img' correctly)

[Jakub Moc]

The above error about inability to read core.img got replaced with
"error: non-sector-aligned data is found in the core file" somewhere
between 1.99-19 and 1.99-20 (which got fixed 1.99-21 - #666992) so
this I guess may be closed).

(For people hitting the same, I could work around it by reformatting
/boot to ext3 on *some* of the affected systems. NFC. Running
grub-setup with --debug showed that it really was unable to find the
file, would suggest some cryptic bug in ext2.mod. Systems with grub
installed to MBR were unaffected, however that is not really an option
for everyone, e.g. cannot be used on dual-boot boxes using
Bitlocker-encrypted Vista/W7 system partition.)