On Tue, 27 Nov 2012, Ronald F. Guilmette wrote:
In message <alpine.bsf.2.00.1211262232330.38...@wonkity.com>,
Warren Block <wbl...@wonkity.com> wrote:
On Mon, 26 Nov 2012, Ronald F. Guilmette wrote:
Starting sector 2048 is definitely a multiple of 4KB, so I am assuming
that all I really need to do here in order to use this new drive as extra
stroage for a FreeBSD system (assuming that I am happy with good old
fashioned MBR style partitioning, which I am) is just:
newfs -U /dev/da1s1
You should also change the partition type to freebsd or freebsd-ufs.
Offhand I'd guess they're both 0xa5, but have not looked. Use 'gpart
modify'.
Thanks Warren! I confess that I hadn't even thought about that. And as
a result, the partition that I just backed up a substantial part of my
system onto is still being listed as "ntfs", even though I have done
the newfs to it and (thus) it is now actually a UFS partition... not NTFS.
% gpart show /dev/da1
=> 63 1953525104 da1 MBR (931G)
63 1985 - free - (992k)
2048 1953519616 1 ntfs (931G)
1953521664 3503 - free - (1.7M)
I can still mount it as a UFS, no problem, so Im inclined to wonder what
the type code on a partition is used for anyway. (FreeBSD doesn't seem to
care if a partition is marked as NTFS as long as it actually has a UFS
filesystem in it.)
Mostly relevant when booting from that drive. Still, it would be bad
for some NTFS utility to helpfully attempt repair of a UFS filesystem.
I tried to do as you suggest and change the partition type to freebsd-ufs,
but there's a problem...
# gpart modify -i 1 -t freebsd-ufs /dev/da1
gpart: Invalid argument
da1 is the drive. da1s1 is the first slice.
(The error message "Invalid argument" is not terribly informative. It
doesn't even indicate which argument is to blame. And I'm not sure if
the index numbers that gpart uses start from 0 or from 1. The man page
doesn't say.)
Slice/partition number is the third column in the gpart output above.
MBR slice numbering starts at one.
P.S. When doing the newfs, I actually ended up having to do:
newfs -U -f 4096 /dev/da1s1
because I was doing this on an old 8.3 system, so the default frag size
there was still set at 2048.
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