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Old 11-05-2002, 03:58 PM   #1
Registered: Sep 2002
Location: lahore pakistan
Distribution: slackware,redhat, FreeBSD,openbsd
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mounting a UFS partition in linux

hello guys
i have a question about mounting the freebsd partition in linux.
i compiled almost 20 kernels for it.
with ufs read-write support and in advanced partition support section i checked the option of support for freebsd partitions.
but only 2.2. kernels were able to mount it but only as read-only.
and with this command
mount -t ufs -o ufstype=44bsd /dev/hdxx /xxxxx
which is a tricky one.

but 2.4 kernels are even not able to mount it read-only.
any suggestions?
and a last question that can we install freebsd on multipe partitions like a swap on /dev/ad0s1
and a "/ "on /dev/ad0s2 not like all in one extended one.
like ad0s1a ,ad0s1b.

thanks a lot in advance and dont mind i know this a 50% linux question.
Old 11-05-2002, 04:18 PM   #2
LQ Guru
Registered: Aug 2001
Location: Dublin, Ireland
Distribution: Slackware
Posts: 5,700

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I'de assume you can install 2 FreeBSDs, I had one machine with Open and Free on seperate partitions at one point... although offhand I think they may also have been seperate drives as well, its been a while.

I just looked at UFS under a 2.4.19 "make menuconfig", and as long as you remember to check off "prompt for incomplete or experimental kernel drivers" at the top, UFS read and write should appear as kernel options under "File Systems" further down.


Old 11-05-2002, 04:40 PM   #3
Registered: Sep 2002
Location: lahore pakistan
Distribution: slackware,redhat, FreeBSD,openbsd
Posts: 219

Original Poster
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i have compiled with support of read-write.
not only the support of read-only as module but aslo the read-write support as built-in function of kernel.
but i think there is a tricky way to mount it with any special option.
any body knows? or any body did it without any option?
Old 01-24-2006, 07:11 AM   #4
LQ Newbie
Registered: Oct 2005
Posts: 5

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Enabling UFS write access in Linux

If you have already mounted the UFS partition (mount -w -t ufs -o ufstype=sun /dev/hda7 /sol10) but you cannot write to it (and you have enabled write access in the kernel), you need to remount it:

mount -t ufs -o remount,rw /dev/hda7 /sol10

This should enable write access to the UFS partition. I found this here:
Old 01-29-2006, 04:22 PM   #5
Registered: Jun 2005
Posts: 542

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OK, here are my spell lines:

mount -w -t ufs -o ufstype=ufs2,nodev,nosuid /mnt/FreeBSD /dev/hda7
/dev/hda7 /mnt/FreeBSD ufs auto,rw,ufstype=ufs2,nodev,nosuid 0 0
Old 02-22-2006, 08:56 AM   #6
LQ Newbie
Registered: Oct 2005
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However, enabling write access can be DANGEROUS (actually it says so in the respective kernel module). I had serious problems with it - it destroyed one Solaris slice, so I had to re-install Solaris. Actually the Linux kernel (2.6.15, on Slackware 10.1) blocked completely while I was trying to write to the Solaris partition - I had to reboot the PC manually.


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