Booting from a USB Drive

[Joseph Sinclair]

Steve,
  I would start over with ext3, and this time I would recommend using UUID as the drive identification method, as that method is resistant to the reordering/remapping that you're experiencing (UUID was introduced exactly because modern controllers may reorder drives on boot).

==Joseph++

Steve Holmes wrote:
> Well, I have some more progress or updates on this problem.  I still
> can't get the thing to but from the USB external drive but here is
> what I have so far.  Sorry for the lengthy details.
> 
> 1. I found out that when I start the HP laptop and use the boot menu
> to choose the USB drive, grub picks up the devices in the opposite
> order than what I knew them to be while running from a live CD.
> 
> 2. So I reconfigured the menu.lst file in grub to use (hd0,0) instead
> of the former (hd1,0).
> 
> 3. When I boot now, grub starts up and when I pick the menu item, the
> RAM FS begins to load.  But then I get a message saying that it is
> waiting for a device and after 10 seconds, it dumps me to an emergency
> shell - probably inside the RAMFS.
> 
> At this point, I could determine that the kernel was scanning devices
> and was now mapping the internal hard drive to /dev/sda and it showed
> the 4 windows partitions.  But for /dev/sdb, no file systems! It
> looked like UDEV was seeing the device but not able to recognize the
> file systems.  Yet, this very drive is what I installed the stuff on
> to and when I run from the Arch install CD, this USB drive shows up
> just fine.  I thought I would try ext4 as the file systems on this
> drive; I'm beginning to wonder if I should scrap the whole thing and
> do it over with ext3 instead.  I thought if Arch installer supports
> ext4 when building that it should be able to boot with it.  Is there
> any chance the kernel wasn't built to support ext4 or something?
> 
> Should I look for anything else?
> 


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