Lenovo ThinkPad 560 Thinkpad 560 User's Guide - Page 222
PCMCIA Storage Card Device Manager for OS/2, OS/2 PCMCIA Storage API Device Driver, specify /!DM
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Advanced Information for PC Cards PCMCIA Storage Card Device Manager for OS/2 OS/2 OS2PCARD.DMD is the device manager for the PCMCIA storage card. Specify the /!DM parameter in the PCM2ATA.ADD line, so OS2PCARD.DMD is used instead of OS2DASD.DMD. If you do not specify /!DM, PCM2ATA.ADD uses the OS/2 standard Storage Card Device Manager (OS2DASD.DMD); however, under some conditions the format is not correct when you use OS2DASD.DMD. The following is a line from the CONFIG.SYS file that describes the Storage Card Device Manager: BASEDEV=OS2PCARD.DMD OS/2 PCMCIA Storage API Device Driver OS/2 This device driver provides a communication function between PC Card Director or the mount utility and the OS/2 PCMCIA ATA card device driver. As a result, a utility in the upper layer can get the drive letter or partition information for the PCMCIA storage card. The following is a line from the CONFIG.SYS file that describes the Storage API device driver: DEVICE =[drive:][directory]PCMSSDIF.SYS 204 IBM ThinkPad 560 User's Guide