Today I got myself a surf squirrel to use with my Amiga 1200.
First I formatted my A1200 and installed Workbench 3.1, then installed the Surf Squirrel drivers and during installation my SCSI CD-ROM drive was correctly detected under squirrel.devices.
I then copied OS3.9 contents to a partition, formatted DH0: and went on to install OS3.9. So far so good.
Unfortunately, when installing the Surf Squirrel drivers under OS3.9, I got to the section where it detects my CD-ROM Drive (just like under 3.1), but I got the 'timer' and it stayed like that

When I reset my Amiga, it did not boot, the screen would stay black, with or without Surf Squirrel attached.
What am I doing wrong?
Thanks in advance for any help!
Regards
E'Blue