For a reasons known only to few ancient gods my PC will boot only from DOS (free or MS) formatted USB-s. Grub based will be reported unbootable or boot porcess will end with error, other will just freeze the boot process altogether. To the topic:

I tried booting off with a FreeDOS USB , with grub4dos added. It was prepared with HP tool. and grub4dos started via autoexec.bat. I use it to chainload to a USB, prepared with WinSetupFromUSB

When the USB boots, I do

map (hd0) (hd2)
map (hd2) (hd0)
map --hook
uuid (to check if I mapped everything correct)
find --set-root /grldr
boot

At this point green.yellow grub screen of WinSetupFromUSB will welcome me

Here things can go two ways

1)If I try to boot and DOS-USB is still plugged, the setup will report that TXTSETUP.SIF(as far as I remember) was not found

2) If I plug out the DOS-USB and only the WinSetupFromUSB is plugged, everything will work as normal.

Just anted to let you all know

Edited December 9, 201114 yr by deckoff

cool...