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Old 11-02-2008, 10:52 AM   #1
ddaas
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I need some clarification about MBR


Hi there !

I need a confirmation about what I say is correct or if not please correct me.

MBR - the first sector (512bytes) of a hard disk, not a partition. It doesn't belong to a partition (ex: sda1) but to the hard disk as a whole (ex: sda).

Superblock - the first sector of a partion, not the hard disk as a whole. It belongs to the structure of the filesystems (ex: the first sector of sda1 is the superblock). Superblock is the same with VBR (Volume boot record).
 
Old 11-02-2008, 01:49 PM   #2
jailbait
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Quote:
Originally Posted by ddaas View Post
Hi there !

Superblock - the first sector of a partion, not the hard disk as a whole. It belongs to the structure of the filesystems (ex: the first sector of sda1 is the superblock).
Most Linux file systems have duplicate superblocks placed at set intervals throughout the file system. That way if the file system is damaged you have a decent chance to find a valid superblock to use in fixing the file system. So, yes, the first sector of a partition contains a superblock but it usually not the only superblock.

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