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USB Removable Media Device Driver for e.g. USB 1.44M Floppy Drive and Iomega 100/250MB portable USB ZIP drive. This is the USB Mass Storage Driver. It works with USB flash drives and USB HDD.


TIP: By Daniela Engert: with BASEDEV=USBMSD.ADD /FIXED_DISK /FLOPPIES:0 /DEVICES:1 the USB Zip 100 should work.

NOTE: During boot USBMSD.ADD creates an empty list with the selected (default1) numbers of devices. Whenever you attach a device it will be connected to this list. This also means, if you attach more devices than specified in the list, they won't be recognized.


Verbose Mode, displays driver information during OS/2 initialization.
Parameter controls usage of 'A' drive flag for the 1st floppy device. The following values of n can be used:
0 - 'A' drive flag is not used;
1 - 'A' drive flag is used;
2 (default value) - 'A' drive flag is used only if there is no other device driver using this flag.
Parameter forces driver to report floppy device geometry with maximal sector count as floppy device physical geometry. With this parameter driver supports LS-120 media formatting but does not support XDF floppy filter features and vice versa.
Number of floppy devices to be served (by default 1). In order to remove service the key value must be set to 0.
Number of removable media devices to be served (by default 1). For example, the statement "BASEDEV=USBMSD.ADD /FLOPPIES:2 /REMOVABLES:3" serves 2 floppy devices (including LS-120 Super Disk devices), 3 removable media devices (like IOMEGAZIP drive). In order to remove service the key value must be set to 0.
System uses removable disks as Large Floppies.
Driver calculates and adds Cylinder/Heads/Sectors values to device geometry. This key helps to support USB drives with capacity more than 40GB for systems with os2dasd driver without 512GB support and for non-LVM systems.
Driver avoids of using ModeSense10 command for geometry detection.
Platform Support:
OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No Yes Yes Yes