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Date:      Tue, 05 Jun 2001 03:24:07 -0700
From:      Nathan <list@khmere.com>
To:        freebsd-questions@freebsd.org, freebsd-hackers@freebsd.org
Subject:   documentation help, installation and the swap partition
Message-ID:  <3B1CB347.DAC04203@khmere.com>

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I am trying to document how the partitions are laid out in FreeBSD and I
have noticed that the installation will place the sector offsets of the
b (swap) partition before the last partition. And will also place the
sector offsets of the largest partition as the last regardless to its
name (ie: d or h)

The question is why ? is it due to performance reasons ? or safety ? or
other ? I have looked for specific documentation on this but I can't
seem to find it.

thanks in advance !

-nb



here is an example:

#        size   offset    fstype   [fsize bsize bps/cpg]
a:   262144        0    4.2BSD     1024  8192    16   # (Cyl.    0 -
260*)

######swap partition sectors start right befiore the d partitions
sectors ########
b:  1048576 18087936      swap                        # (Cyl. 17944*-
18984*)

c: 60036417        0    unused        0     0         # (Cyl.    0 -
59559*)

###### d is the last in sectors but, the 3rd usable partition (a, b, d )
#######
d: 40899905 19136512    4.2BSD     1024  8192    16   # (Cyl. 18984*-
59559*)


e:   524288   262144    4.2BSD     1024  8192    16   # (Cyl.  260*-
780*)
f:    524288   786432    4.2BSD     1024  8192    16   # (Cyl.  780*-
1300*)
g:  8388608  1310720    4.2BSD     1024  8192    16   # (Cyl. 1300*-
9622*)
h:  8388608  9699328    4.2BSD     1024  8192    16   # (Cyl. 9622*-
17944*)



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