Steve said:Henning, if you weren't halfway around the world we could take it to my CFI/computer company CEO in Vicksburg, MS and examine the BIOS parameters.
I'm no Toshiba certified repairman, but I bet something the BIOS has gotten hosed and a reflash might at least recover the ROM to pre-usb external drive configuration. There may even be a BIOS update that can handle the external drive status changes.
I did the BIOS update that was offered on the Toshiba site which claimed to correct USB issues with No Joy, sigh. Maybe it wasn't complete enough.