70 MB Internal Hard Drive (250-4067) Initialization Faxback Doc. # 5077 The regular MS-DOS hard disk utilities are limited to drives with no more than 1024 cylinders. Because the 70-megabyte hard disk drive has 1224 cylinders, special utilities are required. You'll find them on the extended utilities diskette included with your hard drive kit. Before you begin, you need to know which version of the BIOS ROM your system uses. To find out, be sure all your equipment is connected properly. Then, turn on the computer. The screen displays the BIOS ROM version, along with copyright and licensing information. 1. Be sure all your equipment is connected properly. 2. Turn on your computer. The screen displays: BIOS ROM version xx.xx.xx Copyright (C) 1985, 1986, 1987 and Phoenix Technologies Ltd. All Rights Reserved Licensed to Tandy Corp. 3. Look at the numbers at the end of the first line (indicated here by xx.xx.xx) to determine which version of BIOS ROM your system uses. Use the following procedure to initialize your 70-megabyte hard disk drive. Note: This procedure is valid only for this 70 MB Internal Hard Disk Drive. Do not use it for any other hard disk drive. 1. Run the standard SETUP program, either from the original Utilities diskette that came with the computer or from your MS-DOS diskette. To run SETUP, insert either diskette into Drive A and type: A:SETUP [ENTER] 2. When asked for the drive type, select hard drive type 19* if your BIOS ROM version is 1.02.00 or later. Select hard drive type 14 if you deter- mined that you have an earlier version of BIOS ROM. * NOTE: An addendum may have been included with the hard drive stating that drive type 18 should be used instead of drive type 19. The addendum was in error, the correct drive type is 19 for BIOS ROM versions 1.02.00 or later. SETUP forces you to reboot after setting your computer's initialization parameters. You should reboot using Drive A and your original MS-DOS diskette. 3. Insert the Extended Utilities Diskette into Drive A and type: A:XHSECT [ENTER] Various drive parameters are displayed, including the drive type, the number of heads, the number of cylinders, and the number of sectors per track. When asked if the information is correct, press [N]. Then, enter the correct numbers as prompted: heads (7), cylinders (1224), sectors (17), and inter- leave factor (3). 4. With the Extended Utilities diskette still in Drive A, type: A:XHFORMAT [ENTER] This initializes the remaining cylinders above 1024 as the cylinders for an additional MS-DOS formatted drive. Using the EDLIN command, access your CONFIG.SYS file on the MS-DOS diskette and specify the following device drivers: DEVICE = XHDISK.SYS DEVICE = HDRIVE.SYS (this command is not required if you selected Type 19 in Step 1). 5. Reboot your computer with the same MS-DOS diskette. The "extra drive" (cylinders above 1024) is now available as Drive C. 6. Insert your MS-DOS diskette into Drive A and type: A:FDISK [ENTER] This creates the normal MS-DOS primary partition. 7. Reboot again. Now the cylinders above 1024 are available as Drive D and the MS-DOS primary partition is available as Drive C. 8. With your MS-DOS diskette in Drive A, type: A:FORMAT C:/S [ENTER] This will initialize the primary MS-DOS partition and copy the system to it. NOTE: If you are using MS-DOS 03.20.xx, do not perform the rest of this procedure (Steps 9, 10, and 11). Instead, use the MLPART and MLFORMAT utilities. Refer to the MLFORMAT, MLPART, and MLPART.SYS sections of your Tandy 3000 MS-DOS Reference Manual for more information. 9. With your MS-DOS diskette in Drive A, type: A:FDISK [ENTER] This will create an MS-DOS 3.30 extended partition. 10. Reboot again. The extra drive of cylinders above 1024 is now drive E; the extended MS-DOS partition is drive D; the normal MS-DOS partition (the primary partition) is drive C. 11. With your MS-DOS diskette in Drive A, type: A:FORMAT D: This command initializes the extended MS-DOS partition. The 70 MB Hard Disk Drive is now ready to use as logical devices C, D, and E. (smm 07/29/93)