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Date:      Tue, 11 Nov 1997 20:52:44 +1100
From:      Bruce Evans <bde@zeta.org.au>
To:        freebsd-bugs@hub.freebsd.org, sprice@HiWAAY.net
Subject:   Re: docs/4381: mount -t msdos causes panic:vm_fault
Message-ID:  <199711110952.UAA29162@godzilla.zeta.org.au>

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> >Fix
> >
> >      Is this something to do with EIDE bugs?
> >      Should I perhaps start over with a clean drive, and make sure
> >      FreeBSD starts in the first 512 MB?
> 
> No this is not an EIDE bug.  It is a limitation with the PC
> BIOS that restricts bootable partitions to the first 1024
> cylinders.  See http://www.freebsd.org/FAQ/FAQ34.html#34

This has nothing to do with the BIOS either, since `mount -t msdos'
does not use the BIOS.

Apparently the file system is invalid, and msdosfs crashes on some
garbage in it.  It may be really invalid, or just a W95 file system.
It's not clear whether msdosfs can do something reasonable with
parts of a W95 file system that it doesn't understand.

Bruce



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