It says:
You've got a serious issue with that FS3 partition. It is reported as almost 4TB, that's far beyond an Amiga's capability. Not to mention that FFS V40 can only access less than 4GB. This is also the reason why it gurus after loading the OS 3.9 ROM update.
I checked with UAE. It happens if you use HDToolbox of OS 3.1 and cylinder numbers overflow. You should recreate the partition with HDToolbox of OS 3.9. And you should update FFS to version 45.
