Bones McCracker Veteran
Joined: 14 Mar 2006 Posts: 1611 Location: U.S.A.
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Posted: Fri Dec 28, 2012 11:27 pm Post subject: |
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I would avoid terminology like "1st block group", because it causes confusion between block group 0 and block group 1.
As to your question (more information at link):
Quote: | For the special case of block group 0, the first 1024 bytes are unused, to allow for the installation of x86 boot sectors and other oddities. The superblock will start at offset 1024 bytes, whichever block that happens to be (usually 0). However, if for some reason the block size = 1024, then block 0 is marked in use and the superblock goes in block 1. For all other block groups, there is no padding. |
https://ext4.wiki.kernel.org/index.php/Ext4_Disk_Layout _________________
patrix_neo wrote: | The human thought: I cannot win.
The ratbrain in me : I can only go forward and that's it. |
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