On Tuesday 18 November 2003 17:49, Oron Peled wrote:
Sorry for the lame question, but what are magic numbers? Before working on the
raw device, I though it would be a good idea to know what I'm doing. Googling
for ["magic numbers" ext3 fdisk] leads to zillions mailing list archives, so
if anyone can point me to a resource which has more or less comprehensive
explanations, I'll be glad to hear.
What I uderstand from Oron's answer is that some number marks the start and
the end of a prartition, so by knowing in which blocks they appear, one can
reconstruct the partition table. Am I correct?
> I had similar problem (partition table mess) a long time ago (~8 years):
<snip>
> Ignored numbers which where not in regular intervals
> (false alarms)
what intervals can be considered as "regular"
> 3. Ran 'fsck -b <super_block_number>'
> 4. If all is good (it was in my case), than we can trust the
> superblock data (start and size of partition)
> 5. So we can safely use them to fix the partition table
> (back then I used Norton-Disk-Doctor under DOS to edit
> the partition table. I think today parted would give
> you better options -- but didn't check it).
>
> Hope it helps,
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