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- Western Digital Corporation
-
- Field Applications Engineering
-
- Document for TYPES.EXE Utility
-
-
- This document is intended to accompany the TYPES.EXE utility
- placed on this BBS for your convenience. First our disclaimer:
-
- Western Digital assumes no liability for the fitness, operation
- or results of this program. It was created solely for systems
- integrators' use in configuring an AT compatible computer.
-
- Now that that's out of the way, we shall go on ...
-
- This utility is intended to aid beginners or those stuck with
- undocumented equipment in the installation of Western Digital's
-
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- hard disk controllers and / or drives in most AT compatible
- computers.
-
- When loaded, the utility will scan the entire 64K page of BIOS
- memory for a configuration that matches the original AT's
- drive type #1. This drive was defined as follows :
-
- 306 cylinders
- 4 heads
- 17 sectors per track
-
- This specific signature is searched throughout the BIOS area.
- If found, the utility calls this a drive type 1, and proceeds
- to display all other valid drive type tables. Many BIOS
- companies have nonsensical ones included in a string of valid
- configurations. The program is trained to ignore those types
- that have zero heads or cylinders, and to stop the search when
- a larger than 2047 cylinder or 16 head type is found.
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- In the event a match for the 10 Megabyte drive test fails, the
- program will search for a 20 Megabyte drive of the following
- configuration :
-
- 615 cylinders
- 4 heads
- 17 sectors per track
-
- Several versions of BIOS were distributed with this configuration
- as the first drive type.
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- IN CASE OF DIFFICULTY ...
-
-
- To verify the findings of this utility, run your system's
- SETUP utility and define a hard drive type 1. Your hard drive
- can then be installed ( ... if it has at least 4 heads and 306
- cylinders ...) and it should function as a 10 Megabyte hard
- drive. The DOS utility FDISK should report 305 ( or 304 )
- cylinders.
-
- REMEMBER ...
-
- You can only use a drive type that meets the following :
-
- 1) LESS than or EQUAL TO the actual number of
- CYLINDERS on the drive you are trying to
- install.
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- 2) EQUAL TO the actual number of HEADS on the
- drive you are trying to install.
-
- 3) EQUAL to the SECTORS PER TRACK of BOTH THE
- DRIVE AND CONTROLLER !!
-
- ST-506 MFM DRIVES & CONTROLLERS HAVE 17 SECTORS
- ST-506 RLL DRIVES & CONTROLLERS HAVE 26-31 SECTORS *
- ESDI DRIVES AND CONTROLLERS HAVE 17-54 SECTORS *
-
- * Western Digital manufactures controllers that have ON-BOARD
- BIOS ROMS to accept other than motherboard BIOS drive
- configurations. Contact your dealer.
-
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- Below is an example of the program in operation:
-
-
- Scanning system BIOS for an AT drive type 1 ... PLEASE STAND BY ...
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- TYPE CYLINDERS HEADS PRECOMP LAND ZONE SECTORS MEG
-
- 1 306 4 128 305 17 10
- 2 615 4 300 615 17 20
- 3 615 6 300 615 17 30
- 4 940 8 512 940 17 62
- 5 940 6 512 940 17 46
- 6 615 4 65535 615 17 20
- 7 462 8 256 511 17 30
- 8 733 5 65535 733 17 30
- 9 900 15 65535 901 17 112
- 10 820 3 65535 820 17 20
- 11 855 5 65535 855 17 35
- 12 855 7 65535 855 17 49
- 13 306 8 128 319 17 20
- 14 733 7 65535 733 17 42
-
- Press space bar to see other drive types ...
-
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- TYPE CYLINDERS HEADS PRECOMP LAND ZONE SECTORS MEG
-
- 15 0 0 0 0 0 0
- 16 612 4 0 663 17 20
- 17 977 5 300 977 17 40
- 18 977 7 65535 977 17 56
- 19 1024 7 512 1023 17 59
- 20 733 5 300 732 17 30
- 21 733 7 300 732 17 42
- 22 733 5 300 733 17 30
- 23 306 4 0 336 17 10
- 24 0 0 0 0 0 0
- 25 615 4 0 615 17 20
- 26 1024 4 65535 1023 17 34
- 27 1024 5 65535 1023 17 42
- 28 1024 8 65535 1023 17 68
- 29 512 8 256 512 17 34
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- 30 615 2 615 615 17 10
-
- Press space bar to see other drive types ...
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- TYPE CYLINDERS HEADS PRECOMP LAND ZONE SECTORS MEG
-
- 31 989 5 0 989 17 41
- 32 1020 15 65535 1024 17 127
- 33 0 0 0 0 0 0
- 34 0 0 0 0 0 0
- 35 1024 9 1024 1024 17 76
- 36 1024 5 512 1024 17 42
- 37 830 10 1792 830 17 68
- 38 820 10 65535 821 17 68
- 39 615 4 128 664 17 20
- 40 615 8 128 664 17 40
- 41 917 15 65535 918 17 114
- 42 1023 15 65535 1024 17 127
- 43 823 10 512 823 17 68
- 44 820 6 65535 820 17 40
- 45 1024 8 65535 1024 17 68
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- 46 925 9 65535 925 17 69
-
- Press space bar to see other drive types ...
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- TYPE CYLINDERS HEADS PRECOMP LAND ZONE SECTORS MEG
-
- 47 699 7 256 700 17 40
-
- End of drive tables ... press space bar to return to system ...
-
- You merely select the type number that best matches your
- hard drive, and run your manufacturer's SETUP program.
-
- The next step is to run a LOW-LEVEL FORMAT utility. If one
- is needed, we recommend the WD utility WDFMT, located
- elsewhere on this BBS. The WDFMT utility will prompt you for
- the ACTUAL parameters of the hard drive you are installing.
-
- If you are unsure of your drive's parameters, a file called
- DRIVES.LST is available on this TBBS to assist you in most
- of the popular (and some unpopular) hard drives.
-
-
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- If you still need assistance ...
-
- WESTERN DIGITAL 24 HOUR TECH SUPPORT ==> 1-800-777-4787
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