mounting UFS CD-ROMs

[xSAPPYx]

You could try the conv=swab option to dd

dd if=/dev/acd0 of=5853-5864.iso conv=swab

On Wed, Aug 4, 2010 at 18:04, Noah Pratt <npratt at gmail.com> wrote:
> On Tue, Aug 3, 2010 at 8:44 PM, Michael Powell <nightrecon at hotmail.com> wrote:
>> Noah Pratt wrote:
>>
>>> Hi,
>>>
>>> I have a whole bunch of UFS CD-ROMs, but I'm unable to mount them on
>>> my FreeBSD 8 system.
>>> I thought it would be possible. From the FAQ:
>>> http://www.freebsd.org/doc/en/books/faq/disks.html
>>>
>>>     UFS CD-ROMs can be mounted directly on FreeBSD. Mounting disk
>>> partitions from Digital UNIX and other systems that support UFS may be
>>> more complex, depending on the details of the disk partitioning for
>>> the operating system in question.
>>>
>>>
>>> I tried the direct route:
>>>
>>> 6930p# file -s /dev/acd0t01
>>> /dev/acd0: Unix Fast File system [v1] (big-endian), last mounted on
>>                                         ^^^^^^^^^^
>> [snip]
>>>
>>> 6930p# uname -a
>>> FreeBSD 6930p.domain.com 8.0-STABLE FreeBSD 8.0-STABLE #1: Mon May 17
>>> 01:26:14 PDT 2010
>>> root at 6930p.domain.com:/usr/obj/usr/src/sys/GENERIC  amd64
>>>
>>>
>>> Am I missing something that ought to be obvious? [probable]
>>> Is it no longer possible to mount UFS filesystems? [unlikely ;-) ]
>>> Is there something specific about *this* UFS filesystem that prevents
>>> it from working?
>>>
>>
>> I suspect maybe the disk was written using Solaris on SPARC, which is big-
>> endian. Most PC architectures are little-endian.
>>
>> -Mike
>
>
>
> Yes, the CDs were created in Solaris on SPARC. (I think it was a Sparc 10...)
> And yes, my FreeBSD system is an Intel Core2Duo.
>
> In Linux, copying the disc and mounting the disc image via loopback
> worked great:
>   ubuntu# cat /dev/cdrom > cd-image
>   ubuntu# mount -t ufs -o ro,loop cd-image /mnt
>
> It looks like NetBSD has a kernel build option FFS_EI, to enable
> fsck_ffs -B to convert the byte order.
> (I don't have a NetBSD system to test though.)
>
> I even found a Windows program called R-Studio ( http://www.r-tt.com/
> ) that was able to recover data from these discs.
>
> Can the filesystem's endianness be converted in FreeBSD?
>
>
>
> Thanks a lot!
>
> -Noah
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