What is a "unit" number of a device
Greg 'groggy' Lehey
grog at FreeBSD.org
Wed Oct 22 02:24:53 PDT 2003
On Tuesday, 21 October 2003 at 13:25:20 +0200, rk47 wrote:
> What is a "unit" number of a device
That depends a lot on the device. For SCSI disks, you select the unit
number on the drive itself.
> and how does it relate to the minor number of the device.
Typically the last few bits of the minor number map directly to the
> Is there a generic relationship or dowes it differ between devives.
Look at the section man page for the device in question. It *should*
give that mapping. If it doesn't, the header files are (maybe) your
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