Bug#58388: System hangs while booting for installation

[Bennet Uk <bennet@portierhaus.ch>]

Package: boot-floppies
Version: potato

architecture:  i386
model:         Celeron 366 with MSI MS-6153 board
memory:        128 MB
scsi:          Adaptec 2940
cd-rom:        TEAC 32x SCSI
network card:  rtl8139

Booting from the rescue floppy my computer hangs, the last message printed is:
IBM MCA SCSI: No Microchannel-bus support present -> Aborting.

Then nothing goes (not even Ctrl-Alt-Del).
My Adaptec SCSI adapter seems to get initialized correctly.
Any boot-options I could try?

Thanks for any help...

-Bennet Uk