Safely mount OS X UFS filesystem?

Eric Crist mnslinky at
Sat Jul 7 13:06:29 UTC 2007

On Jul 6, 2007, at 9:37 PMJul 6, 2007, Thor Lancelot Simon wrote:

> Can I, on a system running FreeBSD 6.2 or -current, safely mount a
> UFS filesystem created (and used) on Mac OS 10.4.10?  These  
> filesystems
> are UFS1 (at fslevel 3) with big-endian datastructures in the  
> metadata,
> 4k blocks and 1k fragments, and a few minor oddities in their layout;
> they are pretty much exactly the UFS NeXT used on their workstations.
> If so, Will such a filesystem be safe to mount under OS X after I  
> use it
> on FreeBSD?
> I seem to be able to mount these under NetBSD though the snapshot code
> complains that inodes 64 and 16384 are not dedicated to snapshots.

I've mounted OS X formatted UFS file systems just fine for quite some  
time.  I haven't been able to mount FreeBSD formatted UFS  
filesystems, however.

Eric Crist

More information about the freebsd-questions mailing list