09-23-2007
Drive Letters
This should have been answered 3 years ago by an expert.. shame shame
I'm fresh off the truck but I understand the importance of this question!
First, you are probably use to DOS designations like C: and D: etc., however, in FreeBSD your floppy drive is always FD0 and your hard drives (not the CD) are labeled ad0 ad1 ad4 ad6 (or higher or in between) depending on how they are attached to the system. Attached? like on the IDE controller, on a SATA controller, SCSI and the position they are assigned in bios. For me, finding out that a RAID is usually ar0 was helpful.
So where are your drives??? Simple, do this! at the prompt, type in
ls /dev <enter>
This is going to list all the devices attached to your system and their partitions (? I think).. On my server, I find an ad4 and an ad6 so I would use (hopefully, I'm going to try it here soon):
dd if=/dev/ad4 of=/dev/ad6
This because I want to copy the drive attached to the first controller to the second controller and I DO NOT care if it copies blocks marked as bad so long as the second drive doesn't "really" have bad sectors, it should be a perfect backup for what i want and easier than all the config and slicing ect.
Barry L. Salter
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