Does the FAT filesystem have a signature?

Posted by DxCK on Stack Overflow See other posts from Stack Overflow or by DxCK
Published on 2010-03-13T08:47:10Z Indexed on 2010/03/13 8:55 UTC
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Filed under:

fat

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fat32

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filesystems

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filesystem

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bpb

Given the following BPB:

FAT32 BPB

The "MSWIN4.1" string is just the "OEM ID" field, and by Microsoft documentation it should not be used to identify FAT volumes.

The "FAT32 " string is the BS_FilSysType field, and by Microsoft documentation it should not be used to identify FAT volumes either.

So how do i identify that the volume is formatted to FAT? Is there any reliable signature I can relay on?

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