Q: How do I make an exact copy of a disk?

We purchased an identical 2nd hard disk (Quantum QM39100TD-SW, rev N1B0) and installed it in a removable cartridge. Now we need to make it into an exact duplicate of the factory-installed hard drive. In HP-UX, there is a "dd" command to make an exact bit-for-bit copy; do you guys have a similar program for formatting & copying disks. (We plan to pull the cartridge & keep it in a fireproof box for recovery.)

A: Linux has dd, also. You should be able to do a "dd if=/dev/sda of=/dev/sdb". Note: This assumes that /dev/sda is the disk you want to copy, and that /dev/sdb is the disk you want to copy to.