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OS/2 has some drivers which work only on a special kind of system. For example, there are two drivers for your diskette drive. Ibm1flpy.add is for a PC with a PCI or ISA bussystem and the Ibm2flpy.add is for a PC with a Micro Channel (MCA) bussystem. There are some other drivers with the same analogy. So if you have a PCI system you need only the drivers for the PCI system.
OS/2 installs sometimes both drivers the one with a "1" and the one with a "2". But you need only one of them.

Here is a list of the drivers that you can delete from your config.sys file if your PC has a PCI or ISA bussystem, all that drivers contains a "2" in their name:

• Ibm2flpy.add

• Print02.sys

• Ibm2adsk.add

Here is a list of the BASEDEV drivers that you can delete from your config.sys file if your PC has a Micro Channel bussystem, all that drivers contains a "1" in their name:

• Ibm1flpy.add

• Print01.sys

• Ibm1s506.add