From: "Timothy Murphy" <gayleard@xxxxxxxxxx>
Sent: Thursday, 2008, January 10 05:22
Tom Spec wrote:
I am planning to move from one HD to another I need a bit of feedback. I
am partitioned as follows:
sda1 /boot (Linux Partition) 256M
sda2 LVM PV (Linux LVM Partition) 20G
I was planning to.....
1) attach the new HD
2) boot to a rescue CD
3) partition the new HD exactly how the old one is
4) dd if=/dev/sda1 of=/dev/sdb1
5) dd if=/dev/sda2 of=/dev/sdb2
6) make the new HD bootable
7) disconnect the old HD
8) boot
My questions...
- Is this basically the right procedure?
In my opinion dd is not the right tool for this.
(I am amazed no-one else has said this.)
I would partition the new disk as you like,
and copy the contents of the old partitions to the new
with "cp -a".
This is only required if you are increasing a partition's size and
you are not using the dreadful LVM nonsense. (Screw me up once, shame
on you. Screw me up twice, shame on me. I see to it that twice does
not happen.)
- Do I need to boot to the rescue CD or would single user (or emergency)
mode be good enough (in step 2)? - Exactly what steps are required to
"make the new HD bootable"? - Is there a way for me to make the old hd
"unbootable" so I can leave it in, but make sure it's the new one that
boots?
I don't really see any problem.
Assuming you have both disks in the same machine,
you should be able to add a new entry in grub.conf
allowing you to boot from the new disk.
Then you could install grub on the second disk.
No - use the emergency boot. Otherwise you will not have a true copy of
the disk. The copy takes a finite time. The disk contents of the source
from which you are booted will change. So the process is not strictly
speaking safe unless you are booted to a third partition and nothing
has your copy source partition opened.
{^_^}
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