dd - how long does it take for a 500GB drive
Doing a complete backkup of one drive to another, creating a duplicate. Using the command dd if=/dev/sda of=/dev/sdb. I have used this before on a 40GB drive. This time I'm doing a 500GB drive - does anyone have an wild guess on how long it should take?
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Hi,
the exact time will depend on the speed of your harddisks. Are they external USB harddisks? Both internal? SATA? You can calculate the time with the following formula: Code:
500*2^10/X Code:
$ dd if=dummy of=dummy2 Code:
500*2^10/20 = 25600 seconds =~ 425 minutes =~ 7 hours |
Perfect, thank you. The command prompt has not returned, so it appears to still be copying. Although I have heard that sometimes this happens, even though it has completed. It has been going now for 13 hours, so I will stop it and see if I have a good copy.
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Quote:
Code:
dd if=/path/to/source of=/path/to/target bs=1M & pid=$! Code:
kill -USR1 $pid |
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