Date: Thu, 19 Oct 1995 11:54:44 -0700 From: Scott Blachowicz <scott@statsci.com> To: questions@freebsd.org Subject: accessing DOS Logical partitions and/or adding swap space Message-ID: <m0t6072-000r3xC@main.statsci.com>
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Hi-
I need more swap space and I've got DOS Logical partition that I could
use, but I'm not sure if FreeBSD really supports this or not yet. I've
seen mentions that I could use slice 5 and up for the "Logical"/"Extended"
slices (or whatever they're called). So, I did a
/dev/MAKEDEV wd1s5h
to get the device files made for it. Now, I'm trying to figure out what to
do next.
1) Will this work?
2) If so, how do I find out what to stick in a disklabel for my wd1s5
slice? It seems the FreeBSD fdisk doesn't tell me how many sectors are
in that slice (do I need to go run the DOS fdisk? or do I need to
reinstall Linux to use its fdisk? or do 'dd if=/dev/rwd1s5 of=/dev/null
bs=512' and see what it tells me for number of blocks copied?)
3) Armed with appropriate #sectors info, I assume I just go add a disktab
entry with a 'c' partition, do a disklabel write, then do a disklabel
edit to get it right (or something along those lines). Couldn't there
be some tool that could be run to deal with the details (along the
lines of /stand/sysinstall's partitioning) or at least query the size
of the slice and lay down a disklabel with the 'c' partitioned defined?
4) Or should I just use a 'vn' device to add a random file as swap space?
Is there a performance hit to using a file instead of a swap partition?
Scott Blachowicz Ph: 206/283-8802x240 StatSci, a div of MathSoft, Inc.
1700 Westlake Ave N #500
scott@statsci.com Seattle, WA USA 98109
Scott.Blachowicz@seaslug.org
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