IDEFix/OS3.5/3.9 driver have limit of 160GB (137GiB).
This should read 137 GB (128 GiB).
GB = metric gigabtyes (10^9)
GiB = binary gigabytes (2^30)
137 * 10^9 = 128 * 2^30 (approximately)
So by going to 3.9 Should fix my problems?
You didn't mention any problems.
OS 3.9 allows you to use hard drives bigger than 4 GB if you are careful to use only components of OS 3.9 or third-party softwares which support OS 3.9 functionality. It does not magically fix every older program.
Bye,
Thomas