Clone hard disk Εκτύπωση

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To save space, you can compress data produced by dd with gzip, e.g.:

dd if=/dev/hdb | gzip -c  > /image.img

You can restore your disk with:

gunzip -c /image.img.gz | dd of=/dev/hdb

To save even more space, defragment the drive/partition you wish to clone beforehand (if appropriate), then zero-out all the remaining unused space, making it easier for gzip to compress:

mkdir /mnt/hdb

mount /dev/hdb /mnt/hdb

dd if=/dev/zero of=/mnt/hdb/zero

Wait a bit, dd will eventually fail with a "disk full" message, then:

rm /mnt/hdb/zero

umount /mnt/hdb

dd if=/dev/hdb | gzip -c  > /image.img

Also, you can get a dd process running in the background to report status by sending it a signal with the kill command, e.g.:

dd if=/dev/hdb of=/image.img &

kill -SIGUSR1 1234

Ήταν χρήσιμη αυτήν την απάντηση;

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