On Sat, 31 Mar 2007, Mark Glassberg wrote:
> Has anyone succeeded in booting from a usb-storage device. I partitioned
> mine with a small bootable W98 partition followed by my system on an ext2
> partition. I've tried to boot using loadlin vmlinuz initrd=initrd.gz
> root=/dev/sda2 ro, but after the usbcore and usb-storage modules load, the
> linuxrc is still not able to mount /dev/sda2.
>
> Any assistance would be greatly appreciated.
Lots have people have successfully booted from a USB storage device.
It's not enough to load usbcore and usb_storage. You have to load
scsi_mod and sd_mod as well.
You also have to realize that usb-storage has by default a 5-second delay
before it will scan any attached device. If the system tries to use the
device too soon it will fail. You can change the delay length by adding a
boot-line parameter:
usb_storage.delay_use=N
where N is the number of seconds. Many devices will work fine with N set
to 0.
Alan Stern
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