Filesystem that both FreeBSD and OS X can read/write

Eric Crist mnslinky at
Mon Apr 2 01:58:20 UTC 2007

On Apr 1, 2007, at 3:46 PM, Garrett Cooper wrote:

> mal content wrote:
>> On 01/04/07, Eric Crist <mnslinky at> wrote:
>>> On Apr 1, 2007, at 12:53 PM, mal content wrote:
>>> > Hello.
>>> >
>>> > I have a small USB hard disk enclosure and would like to start
>>> > using it to transfer files between OS X and FreeBSD machines.
>>> >
>>> > Is there a filesystem that both OS X and FreeBSD can reliably
>>> > read and write to? I've heard that OS X supports UFS, but there's
>>> > no clear definition on what UFS actually is. I mean Free/Open/Net/
>>> > DragonFly all seem to have slightly differing definitions...
>>> >
>>> > Any ideas?
>>> > MC
>>> >
>>> > (please cc: as I'm not subscribed)
>>> My recommendation would be to use *gasp* FAT32 for the file system.
>>> This allows you FreeBSD/MacOSX/Linux/ and the occasional Windows
>>> support when you eventually need it.  If you only need OS X/FreeBSD
>>> support, UFS is safe.  IIRC, UFS2 is safe, as well.  I've got a  
>>> drive
>>> I'm using that I think is UFS2 formatted.  I'd check, but it's at  
>>> the
>>> office.
>> Hi.
>> Ok, I'll give it a go on an empty drive and see what happens.
>> Would you recommend formatting the drive on an OS X machine, or
>> a FreeBSD machine (or is it irrelevant)?
>> thanks,
>> MC
> I'd do it on the FreeBSD machine. IIRC Mac OSX did some funky stuff  
> with the MBR / slices when formatting disks.
> -Garrett

I just took another disk, formated with UNIX Files System on my Mac,  
and it mounts just fine as UFS on my FreeBSD system.

Eric F Crist
Secure Computing Networks

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