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From: "Alexandre D." <alexandre.delay@free.fr>
To: "Gary W. Swearingen" <garys@opusnet.com>, <alexandre.delay@free.fr>
Date: Mon, 1 Aug 2005 18:59:27 +0200
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Cc: Giorgos Keramidas <keramida@ceid.upatras.gr>, freebsd-questions@freebsd.org
Subject: RE: Migrate primary disk (duplicate)
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Here is the complete process I follow:

   sysctl kern.geom.debugflags=16
   dd if=/dev/zero of=/dev/${disk} bs=1k count=1
   fdisk -BI ${disk}
   disklabel -B -w -r ${disk}s1 auto
   disklabel -R ${disk}s1 generique.disklabel
   newfs /dev/${disk}s1a
   newfs /dev/${disk}s1d
   mount /dev/${disk}s1a ./mnt
   cd ./mnt
   dump 0uafL - / | restore xf -
   cd ..
   umount ./mnt
   mount /dev/${disk}s1d ./mnt
   cd ./mnt
   dump 0uafL - /usr | restore xf -
   cd ..
   umount ./mnt


-----generique.disklabel file-------
  a: 41943040        0    4.2BSD
  b:  2097152   *      swap 
  d: * *    4.2BSD 


------

If I do the same with /stand/sysinstall in stead of 
   dd if=/dev/zero of=/dev/${disk} bs=1k count=1
   fdisk -BI ${disk}
   disklabel -B -w -r ${disk}s1 auto

It works well.