Booting Multiple External HDDs

OK So i'm on Rogero 4.30 v05. Multiman 4.18.05. Everything is up date.

For some reason I can not boot from multiple external hdds..

I thought multiman fixed this a while back with update 4.14.00. I know I skipped some updates from multiman, for example going from 4.14.01 to 4.15.00 ect.. I read that each update is important as the one before so I deleted multiman, installed every single update that came out, and i'm still having trouble booting from multiple external hdds. I've tried leaving each of my 2tb in slot one and two...I've tried using just a USB hub from the right port...I think I've tried everything. I've tried plugging in the power supply to the hub minutes before I turn on the playstation.

Can someone confirm having multiple external hdds working? is there a better firmware to use for having multiple external hdds?? I have almost 600 games trying to remember which are on each hdd is a headache. I love 4.30 but 3.55 always booted every game.

Can someone help me with this? Do you have multiple external hdds working on 4.30 or whatever for that matter.

Thanks for any help.