Adding a partition
jerrymc at clunix.cl.msu.edu
Fri Jan 28 12:45:58 PST 2005
> On Fri, 28 Jan 2005 15:36:08 +0101, David J. Weller-Fahy
> <dave-lists-freebsd-questions at weller-fahy.com> wrote:
> > I left about 26GB free on my 80GB hard drive. Having found a use for
> > that space, I now want to add a partition. I've not added one by hand,
> > and /stand/sysinstall gives me a 'cannot write to ...' message, so I
> > want confirmation that what I'm about to do won't crump on me. ;]
> > System is two 80GB ATA hard drives on a 'Promise PDC20269 UDMA133
> > controller' (according to dmesg), with one on each channel (both
> > master). I'm running software raid using atacontrol.
> > My current partition table follows:
> > #v+
> > dave[tigger]~> sudo bsdlabel ar0s1
> > # /dev/ar0s1:
> > 8 partitions:
> > # size offset fstype [fsize bsize bps/cpg]
> > a: 1048576 0 4.2BSD 2048 16384 8
> > b: 2097152 1048576 swap
> > c: 156296322 0 unused 0 0 # "raw" part, don't edit
> > d: 73400320 30408704 4.2BSD 2048 16384 28544
> > e: 2097152 3145728 4.2BSD 2048 16384 28552
> > f: 12582912 5242880 4.2BSD 2048 16384 28552
> > g: 12582912 17825792 4.2BSD 2048 16384 28552
> > #v-
> > To use up the unused space, I believe I need to add the following line:
> > #v+
> > h: 52487298 103809024 4.2BSD 2048 16384 28552
> > #v-
> > Could someone who's done that before confirm whether that looks right?
> First you need to create a FreeBSD slice with fdisk, say /dev/ar0s2.
> Only then you can disklabel that /dev/ar0s2.
Looks to me like he wants to put the partition in the remaining space
in the existing slice. It all adds up, based on the c: 156296322 size
Now, if he wanted to use some disk left out of the existing slice,
he would have to use fdisk to change the slice table.
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