USBMSD.ADD

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.

BASEDEV=USBMSD.ADD /FLOPPIES:0 /REMOVABLES:n

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.

Parameter

/V

Verbose Mode, displays driver information during OS/2 initialization.

/A_USAGE:n

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.

/MAX_FLOPPY

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.

/FLOPPIES:n

Number of floppy devices to be served (by default 1). In order to remove service the key value must be set to 0.

/REMOVABLES:n

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.

/REMOVABLE_AS_FLOPPY

System uses removable disks as Large Floppies.

/CHS

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.

/MS10_OFF

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