GS/OS: Needs Latest ROM Revision To Work With ProFile

When using GS/OS under Apple IIGS System Disk 4.0 with a 5MB ProFile, be sure you are using the latest ProFile ROM revision.
A 5MB ProFile needs the 341-0299 ROM revision to work correctly with GS/OS.

If you have problems formatting, or receive a message stating that your drive appears to be damaged, you need the new ROM.

NOTE: This ROM is a service part, and is located on the Apple II price pages.
Published Date: Feb 20, 2012