Swappable Hard drives?

[Wojciech Puchar]

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> Soon I will have two identical 120GB IDE HDs in my FBSD 4.10
> system. One is to be basically a backup drive. Can I write a
> MBR to the second HD and then swap cables when I want to
> boot/run the system from the backup HD, assuming I've used pax
> or dump to make the file systems identical? The "normal"

with identical drive make copy with dd

dd if=/dev/ad0 of=/dev/ad1 bs=64k
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