Hard Drive Woes

ok this is a biggy... please help if pos (i'm a bit of a newbie to this) ok here goes...
ps4 - jailbroken v4.55 - works
internal hard drive 2tb - done by me ! - all working
all games installed on internal - working so far...
5tb external seagate backup plus - formatted via ps4 and setup as extended storage
large games 30gb or more- moved to external hard drive via ps4
all games show on external, but do NOT run at all giving error code.
hen - used and all ran on internal but NOT external
any...

Hard Drive Woes