CLFMT1B1.ZIP DOS utility used to low level format SCSI devices, ver 1.B1. EXP1B6.ZIP DOS utility for expanding DPT CDD driver files, ver 1.B6. MOUNT2A1.ZIP DOS utility used with removeable media SCSI peripherals to allow DOS to detect a cartridge change, ver 2.A1. OPT1B.ZIP DOS utility used to change array status from failed to optimal when multiple hard drives have failed due to user induced condition or non-fatal failure, ver 1.B SIG1D5.ZIP DOS utility to determine the version of a DPT driver or a DPT utility, ver 1.D5.