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ext2fs is a little different
There are some other structures between the superblock and the inodes
There are bitmaps recording which blocks are in use and which inodes
One bit per block or inode
The disk is partitioned into 'block groups'
Each block group has a copy of the superblock and bitmaps, some of the inodes, and some data blocks
That way if the superblock or bitmaps are destroyed they can be restored from a copy
So the picture above shows a single block group instead of the entire disk
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Copyright © 2001 M. J. Dominus |