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ASME's Mechanical Engine…ing Toolkit 1997 December
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HARDDRV.TXT
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1986-04-09
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48 lines
Date: May 23, 1985
To: Files
From: AMS
Subject: Fixed Disk Drives - IBM PC/XT and AT
________________________________________________________________________
Built-in Drive Types Supported by XT Fixed-disk BIOS
________________________________________________________________________
DRIVE TYPE 0 1 2 3
Cylinders 306 375 306 306
Heads 2 8 6 4
Write Precomp no no 256 no
Capacity(MB) 5.3 26.1 15.9 10.6
________________________________________________________________________
Note: Type 2 drives for XT --->Tandon TM503
Type 3 drives for XT --->Micro-Science HH612
+++++Any drive larger than 15.5mb requires DOS 3.0+++++
Built-in Drive Types Supported by AT Fixed-disk BIOS
________________________________________________________________________
DRIVE TYPE 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Cylinders 306 615 615 940 940 615 462 733 900 820 855 855 306 733
Heads 4 4 6 8 6 4 8 5 15 3 5 7 8 7
Write Pre-
Comp 128 300 300 512 512 no 256 no no no no no 128 no
Landing
Zone 305 615 615 940 940 615 511 733 901 820 855 855 319 733
Capacity 10.6 32.1 49.0 32.1 117.5 37.2 21.3
(MB) 21.4 65.4 21.4 31.9 21.4 52.0 44.6
_________________________________________________________________________
NOTE: Type 1 drives for AT --->Micro-Science HH612
Type 2 drives for AT --->CMI 6426/6426S, Micro-Science HH725A
Type 3 drives for AT --->CMI 6640
Type 9 drives for AT --->Maxtor XT1140
Type 13 drives for AT --->Disctron D-526
++++++Any drive larger than 33mb requires a new FDISK program++++++
(ATASI 3051 drives are available with SPEEDSTOR software permitting up to
4 DOS partitions).
Source: P.50, PC TECH JOURNAL, December l984
Independent research - FAMILY LEDGERS, Ltd.