Subject: Re: HDD partition handling
To: der Mouse <mouse@Rodents.Montreal.QC.CA>
From: Greg Troxel <gdt@ir.bbn.com>
List: port-sparc
Date: 07/28/2004 08:30:21
der Mouse <mouse@Rodents.Montreal.QC.CA> writes:
> > From: Chris Amthor <amthor@chroam.de>
> >
> > Shouldn't /dev/sd1c be unmountable, since it is not a _real_
> > partition?
>
> But it _is_ a real partition, as real as any other. (About the only
> thing special about it is that it always accesses the whole disk, no
> matter what you put in the disklabel for it.)
But typically sd1c will have fstype unused, not 4.2BSD, and thus you
can't mount it. I don't attend the same whole-disk-/ church as Perry :-),
so I don't know if the install makes the c partition have fstype
4.2BSD when a = c.
E.g. sparc sd0:
# size offset fstype [fsize bsize cpg/sgs]
a: 196800 0 4.2BSD 1024 8192 16 # (Cyl. 0 - 199)
b: 393600 196800 swap # (Cyl. 200 - 599)
c: 8888924 0 unused 0 0 # (Cyl. 0 - 9033*)
d: 196800 590400 4.2BSD 1024 8192 16 # (Cyl. 600 - 799)
e: 3936000 787200 4.2BSD 1024 8192 16 # (Cyl. 800 - 4799)
f: 4165724 4723200 4.2BSD 1024 8192 16 # (Cyl. 4800 - 9033*)
sparc64 wd0 (ultra5):
8 partitions:
# size offset fstype [fsize bsize cpg/sgs]
a: 263088 0 4.2BSD 1024 8192 86 # (Cyl. 0 - 260)
b: 1229760 263088 swap # (Cyl. 261 - 1480)
c: 17801280 0 unused 0 0 # (Cyl. 0 - 17659)
d: 333648 17467632 4.2BSD 1024 8192 87 # (Cyl. 17329 - 17659)
g: 15974784 1492848 4.2BSD 1024 8192 86 # (Cyl. 1481 - 17328)
i386 wd0:
16 partitions:
# size offset fstype [fsize bsize cpg/sgs]
a: 263025 63 4.2BSD 1024 8192 86 # (Cyl. 0*- 260)
b: 2098656 263088 swap # (Cyl. 261 - 2342)
c: 156301362 63 unused 0 0 # (Cyl. 0*- 155060*)
d: 156301488 0 unused 0 0 # (Cyl. 0 - 155060)
e: 262080 2361744 4.2BSD 1024 8192 86 # (Cyl. 2343 - 2602)
f: 16777152 2623824 4.2BSD 1024 8192 86 # (Cyl. 2603 - 19246)
g: 136900449 19400976 4.2BSD 1024 8192 86 # (Cyl. 19247 - 155060*)
--
Greg Troxel <gdt@ir.bbn.com>