[CentOS] how to install centos on the attached external usb hard disk?

Mon Jul 26 16:06:51 UTC 2010
Whit Blauvelt <whit at transpect.com>

On Mon, Jul 26, 2010 at 11:44:33AM -0400, m.roth at 5-cent.us wrote:

> Or tell it to boot from it, rather than hitting the hard drive or CD/DVD
> first?

BIOSs can be strange here too. Some, you tell 'em to boot from USB, and
they'll obey that just as long as the USB drive is plugged in on each boot.
As soon as they boot once without it, they stop looking for it until you go
into the BIOS to set it up again. 

On some systems hitting Esc on boot will give you choices between all
available devices, overcoming the BIOS having decided to subsequently stop
trying the USB after the first failure in looking there. But for something
as useful to administration as being able to boot from USB, getting BIOSs to
play along can be a pain.