Good question, I just wanted to duplicate what was on the drive I have now. I cant remember why I used this scheme. Whats the better file system to use for a large drive like this? PFS seems fine, just know FFS isnt great for large drives.
As far as what happens, I can cold or warm reset and the same things happens. I hear the machine kick on, I get the black screen and indivision logo shows up, and it repeats. Never boots to the original system drive and I cant get to early start menu.
Take the drive out or pull power off it and all is as it was before I put it on.
Did you remember to check the box for bootable on the boot partition in hdtoolbox?
maybe a non boot partition has a higher priority and it defaults to it? go into early startup and try selecting the boot drive and boot.
There is probably no reason to mix pfs/sfs, i would just pick one if i were you. either should work well.