IBM 4/10 GB 4mm DAT Tape Drive microcode update utility This Diskette Set supports the Microcode update process for the IBM internal 3.5" & 5.25" 4mm 4/10GB SCSI tape Drives. This update utility updates the tape drive controlling microcode only. No change or affect will be made to the system BIOS, SCSI Adapter BIOS, Operating System, or application software. Additionally, only the correct tape drive type/model will be updated. This utility is developed for DOS platform only. The product codes of the tape drives are 74G8632 (3.5" drive) and 76G8631 (5.25" drive). This utility uses the SCSI host adapter card used to connect the tape drives to the PC to update the microcode of the tape drive for non- RAID systems. All the files will be supplied in zipped self-extractable files available from the IBM Bulletin Board labeled: 4MMDAT4.EXE for ARCHIVE drives (with switches) 4MMDAT5.EXE for CONNOR/SEAGATE drives (with jumpers) Once you expand the self-extracting file, you will find the files on the diskette. Two diskette images are available, one for each of the two types of the tape drives you may have: 1. MU_TAPE4, supports only the ARCHIVE drives (with switches) 2. MU_TAPE5, supports only the CONNOR & SEAGATE drives (with jumpers) (The jumpers or switches are used to set the SCSI address, etc. and are visible from the rear of the drive). A utility is included on these diskettes to assist in identifying the drive without having to physically inspect it. Each diskette will boot DOS 6.3, and prompt the user for the type of SCSI controller to be used (RAID or non-RAID) The correct ASPI drivers will then be loaded. Since the diskette is multipurpose, multiple ASPI device drivers, supporting many IBM SCSI and RAID adapters, are supplied. Only the proper driver will load; all others will generate error messages, which is normal and should be ignored. Once DOS is booted & the correct driver installed, the MU_TAPE?.EXE should be run in display mode. If you know the drive type, the diskette supporting it should be used. If not, either diskette will work in display mode, as: C:>MU_TAPE? /d where ? is either 4 or 5 Once the drive type is known, the microcode should be updated. follow the instructions contained in the README file on the utility diskette. Note especially that, while the display function works with RAID controllers, the update facility does not. This is explained more fully in the README file. You must call for the appropriate tape cassette o update microcode for a tape drive attached to a RAID controller. Read the instructions carefully. The exec will return the adapter information & pause for the operator. The next screen will contain the drive identification. The microcode succession from older to newer is as follows: ARCHIVE drives (with switches) 4.75 - 4.AC - 4.AP - 4.BK - 4BKA - 4BKC CONNOR & SEAGATE drives (with jumpers) 5.50 - 5.77 - 5AJ Note that regardless of the level found on the drive, the most current level will be installed.