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Date:      Sat, 11 Oct 2003 21:27:47 -0800
From:      Torben Brosten <torben@kappacorp.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: error when trying to mount ext2fs harddisk, wrong magic nbr??
Message-ID:  <3F88E653.7010806@kappacorp.com>
References:  <3F87F0FD.6000406@kappacorp.com> <3F88680A.8080802@kappacorp.com> <3F88AAD7.4060104@kappacorp.com>

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After reading more man pages and the chapter "Adding a Disk" from UNIX System
Administration Handbook, 3rd ed. by Nemieth, Snyder, Seebass and Hein,  I 
realize that this ext2fs harddrive will best be fixed by putting back into a 
linux environment and proceeding with fdisk + fsck etc.

cheers

Torben Brosten wrote:
> I'm trying to decipher the error message:
> 
> ext2fs: #ad/0x000a: wrong magic number 0x8b6 (expected 0xef53)
> 
> I've been reading
> 
> man magic
> man file
> 
> but I have limited C experience. I see the references to ext2 in 
> /usr/share/misc/magic, particularly:
> 
>  >>0x43a  leshort  ^0x0000001 (mounted or unclean)
> 
> Since 0x8b6 is much greater than 0x43a, am I to conclude that the drive 
> was umounted incorrectly? If so, is there a way to use 'file' or some 
> other utility to edit the offending magic number to 0xef53?



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