After much testing and narrowing down, I've determined my A2000 just doesn't like the new exec.library (v45.20) contained in the AMIGAOS ROM UPDATE file of OS3.9's Boing Bag #2.
When Setpatch implements this ROM update, the computer re-boots, but then freezes on a grey screen.
I got a Kickflash card, and was able to install all the updated ROM modules from this file separately. Every one of the new OS3.9 ROM updates installed & worked fine, but as soon as I added the new exec.library (of even installed it by itself) the Amiga would always freeze on a reboot.
Can anyone think what might be conflicting with this new exec.library?
My first assumption would be my PP&S A2000 68040 accelerator card. So if any other owners of this card are using OS3.9 I'd love to hear from you.
I know it's not a software conflict, because even from a cold boot with the startup-sequence disabled, if I type SETPATCH from a CLI, I see all the new modules installed, then the Amiga re-boots and hangs immediately on a light grey screen.
Here is my setup:
A2000 rev. 4.4
3.1 ROM. OS3.0 installed.
DKB MegaChip
A2091 SCSI controller w/ Guru-ROM & latest WD chip +2MB RAM.
SupraRAM card w/ 6MB RAM.
Progressive Peripherals & Software A2000/040 acclerator w/ 32MB RAM.
Repulse audio card.
Kickflash card.
Picasso II graphics card w/ 2MB onboard RAM.
I have been using OS3.9 for years. But I really didn't notice until recently that the Kickstart version still shows up as 40.63 and not 45.x as it should (probably due to the lack of the new exec.library being activated). It would be nice to solve this problem and start using the "modern" kickstart.