[syslinux] ext4, boot error after writing irrelevant files on same partition

[Ferenc Wagner]

Denys Fedoryshchenko via Syslinux <syslinux at zytor.com> writes:

> I faced very strange problem, after i install extlinux, on ext4
> partition and i wrote some files (they doesn't touch syslinux files),
> system refuse to boot and gives "Boot error".
> I checked ldlinux.sys, file is fine, checksum is intact and etc.
> Running extlinux -i /mountpoint sure fixes the problem.
>
> What are the steps to troubleshoot the problem?

What are the steps to reproduce the problem?  Something like:

# extlinux -i /mountpoint

test booting => works

# md5sum /mountpoint/ldlinux.sys >ldlinux.md5
# cp /what/file /mountpoint
# md5sum -c <ldlinux.md5
OK

test booting => fails

# extlinux -i /mountpoint

test booting => works
-- 
Feri.