The EPoX 8K9A3+ is able to boot from USB out of the box, but it is dog slow, so I tried using Plop as a boot accelerator.
Unfortunately, when booting off an USB stick, choosing Plop, and then choosing USB, it just hangs (it shows the outline of the text box where the USB messages are supposed to go, but the box stays empty, not a single message logged, not even "Loading EHCI driver"). This happens even with Alt-u
However, if I boot Plop from floppy, while making sure that the USB stick is not yet plugged in when the floppy starts booting, the everything works ok. And boot from the stick is fast as hoped for (less than 10 seconds with Plop, versus almost 2 minutes without).
The freeze looks as if the BIOS somehow "locks" the USB device if it is already present during BIOS scan. Removing and reinserting the USB device when Plop menu is shown doesn't help :-(
Removing USB keyboard & mouse support (called "legacy USB support" on some other motherboards) doesn't help.
Removing "USB chip support" altogether in the BIOS does remove the freeze (messages are shown in USB log box), but also removes USB host hardwarewise (last message is "No boot device found...")
Unfortunately, this issue makes Plop rather useless as a standalone boot accelerator for USB sticks on that box...
Any ideas?
Thanks,
Alain