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Re: ext4 superblock overwritten

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  Re: ext4 superblock overwritten "Thomas Schmitt" <scdbackup@gmx.net> - 2016-12-09 16:10 +0100

#175588 — Re: ext4 superblock overwritten

Hi,

Heinz Nimmervoll wrote:
> https://i.stack.imgur.com/ciaLG.png

Hard to say from what the right side data might stem.
Left side indeed beared the ext4 magic number at bytes 0x38 and 0x39.


> How is it possible, that even the magic number (and everything else) got
> overwritten?

Most natural explanation would be direct writing to the partition device
or its overall storage device rather than via the filesystem driver:

  dd of=/dev/sda if=/file/with/right/side/data

Of course it could also have been a mad filesystem driver, a mislead
partition editor and/or filesystem formatter, a hardware error, ...


Have a nice day :)

Thomas

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