The topics that follow discuss memory and disk storage information that you need to consider for OS/2 2.0. Memory and disk storage are closely related because of the ability of the operating system to manage the allocation of memory resources between real physical memory and hard disk space.
The minimum memory requirement for OS/2 2.0 is 4MB, but up to 128KB is used on some computers for ROM-to-RAM (read-only memory to random-access memory) remapping. Some systems use more than 128KB for other hardware purposes, so that less than the minimum required memory is available. On these systems, another 512KB to 1MB would satisfy the minimum requirement. You should check such systems to see if there is a way to replace the memory so that the minimum requirement is met. For more information about memory and performance, see Chapter 5, "Optimizing Performance."