[no subject]

I would first look at the partition table and see if it is valid.

fdisk -l /dev/sda

Then you could use xxd /dev/sda1 to look at the raw partition to see
it was over-written with zeros or something.

On the vast majority of current drives, the first partition starts on
sector 63, so if the partition table is gone, you can still use xxd
/dev/sda and just skip down 63*512 bytes to see the start of the first
partition.

Basically rebuilding the partition table is doable.  Rebuilding the
FAT32 File Allocation Table is next to impossible, but FAT32 does
maintain a redundant table, so it is possible only one was corrupted.

Greg
-- 
Greg Freemyer


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