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Old 03-23-2010, 11:52 AM   #1
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Registered: Oct 2004
Location: Texas
Distribution: Redhat 9, Fedora Core 2, and RHEL 3.0
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Copying a partition from one hard drive to the same partition on another hard drive

I am trying to move a whole bunch of files from one partition on one hard drive to the same partition on another hard drive. Can I mount the same partition (same name, different drives, i.e. /data on /dev/hda1 and /data on /dev/hdb1)and copy those files? Shutdown the server, take out /dev/hda1 and boot up with the new drive and it's /data contents. Thanks.
Old 03-23-2010, 12:02 PM   #2
Registered: May 2004
Location: Amsterdam, Holland
Distribution: Ubuntu, Redhat, Angstrom (others in the past)
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Well not completely, you can't mount them both at the same time in the same location. Ater you've gotten rid of the old drive/partition you can of course mount the new one there instead.

I tend to do something like

umount /data
mkdir /mnt/src
mount -oro /dev/oldpart /mnt/src
mkdir /mnt/dst
mount /dev/newpart /mnt/dst
cp -a /mnt/src/* /mnt/dst
umount /mnt/dst
umount /mnt/src
mount /dev/newpart /data

Make sure there's a filesystem on the partition on the new drive (e.g. mkfs -j /dev/newpart). If it's just a /data you don't need to do much more (well, edit /etc/fstab so it gets auto mounted at startup).

If you also plan to move your boot/root partition(s) there you also need to install a boot block on the new disk, with grub or such.

Last edited by bertl; 03-23-2010 at 12:03 PM.


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