Re: install/47671: How do I manually add an extra MBR style disk?

[Andrew Cagney <andrew.cagney%gmail.com@localhost>]

The following reply was made to PR install/47671; it has been noted by GNATS.

From: Andrew Cagney <andrew.cagney%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: install-manager%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
netbsd-bugs%netbsd.org@localhost
Subject: Re: install/47671: How do I manually add an extra MBR style disk?
Date: Wed, 20 Mar 2013 08:23:56 -0400

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 Content-Type: text/plain; charset=UTF-8
 
 Here's the output from several further runs with -w:
 
 # mbrlabel /dev/rsd0
 Found MSDOS partition; size 1073741824 (524288 MB), offset 2048
   skipping existing MSDOS partition at slot a.
 Found 4.2BSD partition; size 524288000 (256000 MB), offset 1073743872
   adding 4.2BSD partition to slot e.
 
 5 partitions:
 #        size    offset     fstype [fsize bsize cpg/sgs]
  a: 1073741824      2048      MSDOS                     # (Cyl.      1 -
 524288)
  b:     16384 1073743872     4.2BSD   1024  8192    16  # (Cyl. 524289 -
 524296)
  c: 1952151552         0     unused      0     0        # (Cyl.      0 -
 953198)
  d:     16384 1073743872     4.2BSD   1024  8192    16  # (Cyl. 524289 -
 524296)
  e:     16384 1073743872     4.2BSD   1024  8192    16  # (Cyl. 524289 -
 524296)
 
 notice how it is breeding partitions ...
 
 A reboot, however, seems to have flushed what ever was going wrong:
 
 # mbrlabel /dev/rsd0
 Found MSDOS partition; size 1073741824 (524288 MB), offset 2048
   skipping existing MSDOS partition at slot e.
 Found 4.2BSD partition; size 524288000 (256000 MB), offset 1073743872
   skipping existing 4.2BSD partition at slot f.
 
 8 partitions:
 #        size    offset     fstype [fsize bsize cpg/sgs]
  c: 1952151552         0     unused      0     0        # (Cyl.      0 -
 953198)
  e: 1073741824      2048      MSDOS                     # (Cyl.      1 -
 524288)
  f: 524288000 1073743872     4.2BSD      0     0     0  # (Cyl. 524289 -
 780288)
 
 if nothing else, there needs to be an ignore disklable flag.
 
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 Here&#39;s the output from several further runs with -w:<div><br></div><div=
 ><div># mbrlabel /dev/rsd0</div><div>Found MSDOS partition; size 1073741824=
  (524288 MB), offset 2048</div><div>=C2=A0 skipping existing MSDOS partitio=
 n at slot a.</div>
 <div>Found 4.2BSD partition; size 524288000 (256000 MB), offset 1073743872<=
 /div><div>=C2=A0 adding 4.2BSD partition to slot e.</div><div><br></div><di=
 v>5 partitions:</div><div># =C2=A0 =C2=A0 =C2=A0 =C2=A0size =C2=A0 =C2=A0of=
 fset =C2=A0 =C2=A0 fstype [fsize bsize cpg/sgs]</div>
 <div>=C2=A0a: 1073741824 =C2=A0 =C2=A0 =C2=A02048 =C2=A0 =C2=A0 =C2=A0MSDOS=
  =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 # (C=
 yl. =C2=A0 =C2=A0 =C2=A01 - 524288)</div><div>=C2=A0b: =C2=A0 =C2=A0 16384 =
 1073743872 =C2=A0 =C2=A0 4.2BSD =C2=A0 1024 =C2=A08192 =C2=A0 =C2=A016 =C2=
 =A0# (Cyl. 524289 - 524296)</div><div>=C2=A0c: 1952151552 =C2=A0 =C2=A0 =C2=
 =A0 =C2=A0 0 =C2=A0 =C2=A0 unused =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0 0 =C2=
 =A0 =C2=A0 =C2=A0 =C2=A0# (Cyl. =C2=A0 =C2=A0 =C2=A00 - 953198)</div>
 <div>=C2=A0d: =C2=A0 =C2=A0 16384 1073743872 =C2=A0 =C2=A0 4.2BSD =C2=A0 10=
 24 =C2=A08192 =C2=A0 =C2=A016 =C2=A0# (Cyl. 524289 - 524296)</div><div>=C2=
 =A0e: =C2=A0 =C2=A0 16384 1073743872 =C2=A0 =C2=A0 4.2BSD =C2=A0 1024 =C2=
 =A08192 =C2=A0 =C2=A016 =C2=A0# (Cyl. 524289 - 524296)</div></div><div><br>=
 </div><div>notice how it is breeding partitions ...</div>
 <div><br></div><div>A reboot, however, seems to have flushed what ever was =
 going wrong:</div><div><br></div><div><div># mbrlabel /dev/rsd0</div><div>F=
 ound MSDOS partition; size 1073741824 (524288 MB), offset 2048</div><div>
 =C2=A0 skipping existing MSDOS partition at slot e.</div><div>Found 4.2BSD =
 partition; size 524288000 (256000 MB), offset 1073743872</div><div>=C2=A0 s=
 kipping existing 4.2BSD partition at slot f.</div><div><br></div><div>8 par=
 titions:</div>
 <div># =C2=A0 =C2=A0 =C2=A0 =C2=A0size =C2=A0 =C2=A0offset =C2=A0 =C2=A0 fs=
 type [fsize bsize cpg/sgs]</div><div>=C2=A0c: 1952151552 =C2=A0 =C2=A0 =C2=
 =A0 =C2=A0 0 =C2=A0 =C2=A0 unused =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0 0 =C2=
 =A0 =C2=A0 =C2=A0 =C2=A0# (Cyl. =C2=A0 =C2=A0 =C2=A00 - 953198)</div><div>=
 =C2=A0e: 1073741824 =C2=A0 =C2=A0 =C2=A02048 =C2=A0 =C2=A0 =C2=A0MSDOS =C2=
 =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 # (Cyl. =
 =C2=A0 =C2=A0 =C2=A01 - 524288)</div>
 <div>=C2=A0f: 524288000 1073743872 =C2=A0 =C2=A0 4.2BSD =C2=A0 =C2=A0 =C2=
 =A00 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 0 =C2=A0# (Cyl. 524289 - 780288)</div></=
 div><div><br></div><div>if nothing else, there needs to be an ignore diskla=
 ble flag.</div>
 
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