MFM Hard disks
==============
Seagate
    
MODEL     FORMAT  R/W   Data   Step   AveAcc   Sect  Auto  Watts  Im   Write
          MBytes HEADS  Cyl     us      ms    /Trk   Park   Max   A    Comp
-----------------------------------------------------------------------------
ST1100    83.0    9     1072   6-200    15     17     YES   12.0  2.7  N/A
ST124     21.4    4      615   3-200    40     17     NO    33.0  2.9  N/A
ST125     21.4    4      615   3-200    28     17     YES   28.0  2.0  N/A
ST125-0   21.4    4      615   3-200    40     17     YES   28.0  2.0  N/A
ST125-1   21.4    4      615   3-200    28     17     YES   28.0  2.0  N/A
ST138     32.1    6      615   3-200    28     17     YES   28.0  2.0  N/A
ST138-0   32.1    6      615   3-200    40     17     YES   28.0  2.0  N/A
ST138-1   32.1    6      615   3-200    28     17     YES   28.0  2.0  N/A
ST151     42.5    5      977   3-20     24     17     YES   27.0  2.0  N/A
ST212     10.0    4      306   5-500    65     17     NO    44.4  4.2  N/A
ST213     10.7    2      615   5-200    65     17     NO    30.4  2.2  300
ST225     21.4    4      615   5-200    65     17     NO    33.0  2.4  300    
ST251     42.8    6      820   3-200    40     17     YES   36.0  2.0  N/A
ST251-0   42.8    6      820   3-200    40     17     YES   29.0  2.0  N/A
ST251-1   42.8    6      820   3-200    28     17     YES   36.0  2.5  N/A
ST252-0   42.8    6      820   3-200    40     17     YES   29.0  2.0  N/A
ST252-1   42.8    6      820   3-200    28     17     YES   36.0  2.5  N/A
ST253     43.0    5      989   8-200    28     17     YES   45.0  4.5  N/A
ST412     10.0    4      306   5-500    85     17     NO    50.0  3.5  128
ST419     15.0    6      306   5-500    85     32     NO    50.0  3.5  128   
ST4026    21.4    4      615  25-50     40     17     YES   55.0  4.0  N/A
ST4038    31.9    5      733  10-70     40     17     YES   56.0  4.0  300
ST4038M   31.9    5      733  10-70     40     17     YES   56.0  4.0  N/A
ST4051    42.5    5      977  10-70     40     17     YES   55.0  4.0  N/A
ST4053    44.5    5     1024   3-70     28     17     YES   55.0  4.0  N/A
ST406      5.0    2      306   5-500    85     17     NO    50.0  3.6  128
ST4085    71.0    8     1024   8-200    28     17     YES   61.0  5.8  N/A
ST4086    72.0    9      925   8-200    28     17     YES   61.0  5.8  N/A
ST4096    80.2    9     1024   3-70     28     17     YES   55.0  5.3  N/A
ST4097    80.0    9     1024   8-200    28     17     YES   61.0  4.5  N/A
ST506      5.0    4      153   3 Only   85     17     NO    47.0  3.5  128
-----------------------------------------------------------------------------

RLL Hard disks
==============
Seagate

MODEL     FORMAT  R/W   Data   Step   AveAcc   Sect  Auto  Watts  Im   Write
          MBytes HEADS  Cyl     us      ms    /Trk   Park         A    Comp
-----------------------------------------------------------------------------
ST1106R   91.0    7      977            24     26    YES    12.0  2.5  N/A
ST1150R  128.0    9     1072   6-200    15     26    YES    12.0  3.2  300
ST138R    32.7    4      615   3-200    28     26    YES    28.0  2.8  N/A
ST157R-0  49.1    6      615   3-200    40     26    YES    28.0  2.8  N/A
ST157R-1  49.1    6      615   3-200    28     26    YES    28.0  2.8  N/A
ST225R    21.2    2      667   5-200    70     31    NO     33.0  3.2  N/A
ST238R    32.7    4      615   5-200    65     26    NO     33.8  3.2  N/A
ST250R    42.3    4      667   5-200    70     31    NO     33.0  3.2  N/A
ST251R    43.6    4      820   3-200    40                             N/A
ST277R-0  65.5    6      820   3-200    40     26    YES    29.0  3.0  N/A
ST277R-1  65.5    6      820   3-200    28     26    YES    36.0  3.7  N/A
ST278R-0  65.5    6      820   3-200    40     26    YES    29.0  3.0  N/A
ST278R-1  65.5    6      820   3-200    28     26    YES    36.0  3.7  N/A
ST279R    65.0    5      989   8-200    28     26    YES    40.0  5.5  128
ST4077R   68.2    5     1024   3-70     28     26    YES               N/A
ST4135R  115.0    9      960   8-200    28     26    YES    61.0  5.8  N/A
ST4144R  122.7    9     1024   3-70     28     26    YES    55.5  5.3  N/A
-----------------------------------------------------------------------------


SCSI Hard disks
==============
Seagate

MODEL     FORMAT  R/W   Data   Step   AveAcc   Sect  Auto  Watts  Im   Write
          MBytes HEADS  Cyl     us      ms    /DRV   Park         A    Comp
-----------------------------------------------------------------------------
ST1090N     79    5     1068   6-200    15     29    YES    33.75 3.25 N/A    V
ST1096N     83.9  7      906   3-200    20     26     "     33.75 2.6  N/A    V
ST1111N     98    5     1068   6-200    15     36     "     33.75 3.25 N/A    V
ST11200N  1050   15     1875            11    VARI    "           2.24 N/A    V
ST1126N    107    7     1068   6-200    15    29/1    "     34    3.25 N/A    V
ST1133N    113.4  5     1268   6-200    15    36/1    "     34    3.25 N/A    V
ST1156N    138    7     1068   6-200    15     36     "     34    3.25 N/A    V
ST1162N    137.5  9     1068   6-200    15    29/1    "     34    3.25 N/A    V
ST1186N    158.8  7     1268   6-200    15    36/1    "     34    3.25 N/A    V
ST1201N    171.9  9     1068   6-200    15    36/1    "     34    3.25 N/A    V
ST1239N    204.2  9     1268   6-200    15    36/1    "     34    3.25 N/A    V
ST125N-0    21.5  4      407   3-200    40     26     "     29    2.9  N/A    S
ST125N-1    21.5  4      407   3-200    28     26     "     29    2.9  N/A    S
ST138N-0    32.2  4      615            40     26     "     29    2.9  N/A    S
ST138N-1    32.2  4      615            28     26     "     29    2.9  N/A    S
ST1400N    331    7     1476            14    VARI    "     15    2.5  N/A    V
ST1401N    338    9     1100            12    VARI    "     15    2.5  N/A    V
ST1480N    426    9     1476            14    VARI    "     15    2.5  N/A    V
ST1481N    426    9     1476            14    VARI    "     15    2.5  N/A    V
ST157N-0    48.6  6      615   3-200    40     26     "     29    2.0  N/A    S
ST157N-1    48.6  6      615   3-200    28     26     "     29    2.0  N/A    S
ST1581N    525    9     1476            14    VARI    "     15    2.5  N/A    V
ST177N      60.8  5      921            20     26     "     27    2.0  N/A    V
ST1980N    860   13     1732            10    VARI    "           2.0  N/A    V
ST2106N     91    5     1022   N/A      18     36     "     63    6.2  N/A    V
ST2125N    107    3     1544            18    VARI    "     61    5.8  N/A    V
ST2209N    179    5     1544            18    VARI    "     61    5.8  N/A    V
ST225N      21.3  4      615   5-200    65     17    NO           2.2  N/A    S
ST2383N    332    7     1261            14    VARI   YES    58    4.75 N/A    V
ST2502N    435    7     1755            16    VARI    "     58    4.75 N/A    V
ST251N-0    43.1  4      820   3-200    40     26     "     30    3.2  N/A    S
ST251N-1    43.2  4      630   3-200    28     34     "     37    3.9  N/A    S
ST277N-0    64.9  6      820   3-200    40     26     "     30    3.2  N/A    S
ST277N-1    64.9  6      628   3-200    28     34     "     37    3.9  N/A    S
ST296N      84.9  6      820   3-200    28     34     "     37    2.5  N/A    S
ST3283N    248.6  5     1691            12    VARI    "      5.7  1.5  N/A    A
ST4077N     67.6  5                     28            "                N/A    A
ST4096N     83.9  4                     17            "                N/A    A
ST41200N  1037   15     1931            15    VARI    "     60    5.6  N/A    V
ST4144N    122.1  9                     28            "           4.0  N/A    V
ST41600N  1370.5 17     2098            11    VARI    "     39.4  6.1  N/A    A
ST41601N  1370.5 17     2098            11    VARI    "     39.4  6.1  N/A    A
ST41650N  1415   15     2107            15    VARI    "     58    5.3  N/A    A
ST41651N  1415   15     2107            15    VARI    "     58    5.3  N/A    A
ST4182N    155    9      969            16     35     "     63    5.2  N/A    V
ST4192N    168.5  8                     17            "                N/A    V
ST42100N  1900   15     2573            12    VARI    "     58    5.3  N/A    A
ST42101N  1900   15     2573            12    VARI    "     58    5.3  N/A    A
ST4350N    300    9     1412            16    VARI    "     64    6.5  N/A    V
ST4376N    330    9     1549            17    VARI    "     64    6.4  N/A    V
ST4385N    330   15      791            10    VARI    "     59    5.5  N/A    V
ST4702N    601   15     1549            16    VARI    "     59    5.5  N/A    V
ST4766N    676   15     1632            15     54     "     59    5.5  N/A    V
ST4767N    665   15     1356            12     64     "     60    5.6  N/A    V
-----------------------------------------------------------------------------
V=Voice Coil
A=Straight Arm
S=Stepper


ESDI Hard disks
==============
Seagate

MODEL     FORMAT  R/W   Data   Step   AveAcc   Sect  Auto  Watts  Im   Write
          MBytes HEADS  Cyl     us      ms    /DRV   Park         A    Comp
-----------------------------------------------------------------------------
ST1111E     98    5     1072   6-200    15     36    YES    33.75 3.25 N/A
ST1156E    138    7     1072   6-200    15     36    YES    33.75 3.25 N/A
ST1201E    177    9     1072   6-200    15     36    YES    12    3.25 N/A
ST2106E     89    5     1024    N/A     18     34    YES    59    5.5  N/A
ST2182E    160    4     1453            16     54    YES    59    5.5  N/A
ST2383E    337    7     1747    N/A     16     54    YES    59    5.5  N/A
ST4182E    151.8  9      969    N/A     16     34    YES    61    5.9  N/A
ST4383E    319   13     1412            18     34    YES    61    5.9  N/A
ST4384E    319   15     1224            14     34    YES    61    5.9  N/A
ST4442E    368   15     1412            16     34    YES    61    5.9  N/A
ST4766E    664   15     1632            15     53    YES    58    5.3  N/A
ST4767E    676   15     1399            12     63    YES          5.7  N/A
ST4769E    631   15     1552            13     53    YES          5.7  N/A
-----------------------------------------------------------------------------

ATBUS Hard disks
================
Seagate (Check required Docs for translating parmeters)

MODEL     FORMAT  R/W   Data   Step   AveAcc   Sect  Auto  Watts  Im   Write
          MBytes HEADS  Cyl     us      ms    /DRV   Park         A    Comp
-----------------------------------------------------------------------------
ST1057A     53.4                        18           YES          2.63 N/A
ST1090A     79                 6-200    15           YES    33.75 3.25 N/A
ST1102A     89.1                        19           YES          2.63 N/A
ST1111A     98                 6-200    15           YES    33.75 2.25 N/A
ST1126A    111                 6-200    15           YES    33.75 3.25 N/A
ST1133A    117                 6-200    15           YES    33.75 3.25 N/A
ST1144A    130.7                N/A     19           YES          2.63 N/A
ST1156A    138                 6-200    15           YES    33.75 2.25 N/A
ST1162A    143                 6-200    15           YES    33.75 3.25 N/A
ST1186A    164                 6-200    15           YES    33.75 3.25 N/A
ST1201A    177                 6-200    15           YES    33.75 3.25 N/A
ST1239A    211                 6-200    15           YES    33.75 3.25 N/A
ST125A-0   21.5                3-200    40           YES    29    2.9  N/A
ST125A-1   21.5                3-200    28           YES    29    2.9  N/A
ST138A     32.1                3-200    40           YES    29    2.9  N/A
ST138A     32.1                3-200    28           YES    29    2.9  N/A
ST1400A   331.7                         14           YES    15    2.8  N/A
ST1401A   343.7                         12           YES    15    2.5  N/A
ST1480A   426.1                         14           YES    15    2.5  N/A
ST157A-0   44.7                3-200    40           YES    29    2.0  N/A
ST157A-1   44.7                3-200    28           YES    29    2.0  N/A
ST2274A   241                           16           YES    59    5.5  N/A
ST2383A   338                           16           YES    59    5.5  N/A
ST274A     65.5                         29           YES    58    5.1  N/A
ST280A     71.3                         29           YES    58    5.1  N/A 
ST3051A    43.1                         16           YES    5.3 LAPTOP N/A
ST3096A    89.2                         14           YES    5.3 LAPTOP N/A
ST3120A   106.9                         15           YES    5.3 LAPTOP N/A
ST3144A   130.6                         16           YES    5.3 LAPTOP N/A
ST325AX   21.4                          28           YES          0.8  N/A
ST3283A  245.4                          12           YES    5.7 LAPTOP N/A
ST351AX   42.82                         28           YES          0.8  N/A
ST9051A   42.8                          18           YES    1.7 LAPTOP N/A
ST9077A   64.0                          18           YES    3.0 LAPTOP N/A
ST9096A   85.3                          16           YES    2.0 LAPTOP N/A
ST9144A  127.9                          16           YES    2.0 LAPTOP N/A
-----------------------------------------------------------------------------


Maxtor Drive Specifications
------------------------------------------------------------------------
Model  Form  Capacity  Access  Cyls   Hds Sect/Trk  Precomp Park Cyl
------------------------------------------------------------------------
7080AT          80.2            990   10      17      N/A      
7213AT         202              683   16      38      N/A
7120AT         120              936   16      17      N/A




Western Digital Drive Specifications
------------------------------------------------------------------------
Model  Form  Capacity  Access  Cyls   Hds Sect/Trk  Precomp Park Cyl
------------------------------------------------------------------------
WDC AC2200F    202              989   12      35      N/A      






Miniscribe Drive Specifications
------------------------------------------------------------------------
Model  Form  Capacity  Access  Cyls   Hds Sect/Trk  Precomp Park Cyl
------------------------------------------------------------------------

1006    5F      5.3     179     306    2      17      128     336
1012    5F     10.6     179     306    4      17      128     336
2006    5F      5.3      93     306    2      17      128     336
2012    5F     10.6      85     306    4      17      128     336
3012    5H     10.6     155     612    2      17      128     656
3053    5H     44.5      25    1024    5      17      512     AUTO
3085    5H     71.2      22    1170    7      17      512     AUTO
3130E   5H    112.0      17    1250    5      35      N/A     AUTO
3180E   5H    156.8      17    1250    7      35      N/A     AUTO
3180S   5H    161.9      17    1255    7      36      N/A     AUTO
3212    5H     10.6      85     612    2      17      128     656
3412    5H     10.6      60     306    4      17      128     336
3425    5H     21.4      85     615    4      17      128     656
3425P   5H     21.4      53     615    4      17      128     656
3438    5H     32.7      85     615    4      26      128     656
3438P   5H     32.7      53     615    4      26      128     656
3650    5H     42.2      61     809    6      17      128     852
3650R   5H     64.6      61     809    6      26      128     852
3675    5H     64.6      61     809    6      26      128     852
4010    5F      8.3     133     480    2      17      128     522
4020    5F     16.7     133     480    4      17      128     522
6032    5F     26.7      28    1024    3      17      512     AUTO
6053    5F     44.5      28    1024    5      17      512     AUTO
6079    5F     68.1      28    1024    5      26      512     AUTO
6085    5F     71.3      28    1024    8      17      512     AUTO
6128    5F    109.0      28    1024    8      26      512     AUTO
7040A   3O     42.7      19     981    5      17      N/A     AUTO
7080A   3O     85.4      19     981   10      17      N/A     AUTO
8051A   3H     42.7      28     745    4      28      N/A     AUTO
8051S   3H     42.7      28     745    4      28      N/A     AUTO
8212    3H     10.7      68     615    2      17      128     656
8225    3H     20.5      45     771    2      26      128     810
8225A   3H     21.4      40     615    4      17      N/A     810
8225XT  3H     21.4      68     805    2      26      N/A     820
8412    3H     10.6      50     306    4      17      128     336
8425    3H     21.4      68     615    4      17      128     664
8425F   3H     21.4      40     615    4      17      128     664
8425S   3H     21.4      68     615    4      17      N/A     664
8425XT  3H     21.4      68     615    4      17      N/A     664
8438    3H     32.7      68     615    4      26      128     664
8438F   3H     32.7      40     615    4      26      128     664
8450    3H     41.0      45     771    4      26      128     810
8450A   3H     42.7      40     745    4      28      N/A     810
8450XT  3H     42.8      68     805    4      26      N/A     820
9380E   5F    329.0      16    1224   15      35      N/A     AUTO
9380S   5F    336.7      16    1218   15      36      N/A     AUTO
9780E   5F    676.0      17    1661   15      53      N/A     AUTO
------------------------------------
Code Legend
E  = ESDI Interface
S  = SCSI Interface
A  = Integrated AT Controller
XT = Integrated PC/XT Controller
5  = 5.25 inch disks
3  = 3.50 inch disks
F  = Full Height
H  = Half Height
O  = One Inch High
N/A= Not Applicable - ignored by drive
NOTE:  In the case of AT drives the characteristics in this table are
translated installation characteristics that do not necessarily reflect
the physical characteristics of the drive.


IDE Hard disks
==============
Conner

PHYSICAL  FORMAT (NATIVE MODE)              Drive type for Bios
------------------------------             /--------------------\
MODEL         FORMAT  R/W   Data   Sect     Drv   Cyl  Hds  Sect
              MBytes HEADS  Cyl             Type                 ENC  INTER
-----------------------------------------------------------------------------
CP2024           21    2     653                                 RLL  IDE
CP3000           42.6  2    1045     40      17    977  5   17
CP3020           20    2     636     33                          RLL  SCSI
CP3024/20        21    2     636     33      17    615  4   17   RLL  IDE
CP3040           40    2    1047                                 RLL  SCSI
CP3044           42    2    1047     17                          MFM  IDE
CP3044/20        42.9  2    1024/26  40       -    977  5   17
CP30064/160      60    4     761     39       -    761  4   39
CP30084/80       84.1  4    1053     39       -    832  6   33
CP30100         120    4    1522                                 RLL  SCSI
CP30104/00      120    4    1522     39       -    761  8   39   RLL  IDE
CP3100          100    8     776     33                          RLL  SCSI
CP3104/00       104    8     776     33       -    776  8   33   RLL  IDE
CP3114          112    8     832     33       -    832  8   33   RLL  IDE
CP3180           80    6     832                                 UNK  SCSI
CP3184/80        84.2  6     832     33       -    832  6   33   RLL  IDE
CP3200          209    8    1209     39                          RLL  SCSI
CP3200F         212    8    1366     38                          RLL  SCSI
CP3204F/00F     212    8    1366     38       -    683 16   38   RLL  IDE
CP340            42    4     788     26                          RLL  SCSI
CP342            40.0  4                      2    
CP344            42    4     805                                 RLL  IDE
CP3504          510   12    1695     49       -   1024 16   61
CP4024           21    2     627                                 RLL  IDE
CP4044           42    2    1104                                 RLL  IDE
-----------------------------------------------------------------------------


VAX Hard disks
==============
Digital
                                                                                            rev/min
      Total Clust Sect Trk  Max      Total   FORMAT  UNFORM  Ave   trk  Bytes  hds   trks   Rot     Ave    Ave
       Cyl  Size  Trk  Cyl  File     Blocks  MBytes  MBytes  seek  trk  Sectr        Surf   Spd     access Rot-Lat
------------------------------------------------------------------------------------------------------------------
RZ22               33                         52             25          512                        33.4   8.3
RZ23               33                        104             25          512                        33.4   8.3
RZ24               38                        209             16          512                        24.3   8.3
RZ55               36                        332     380     16          512                        24.3   8.3
RZ56               54                        665     760     16          512                        24.3   8.3
RZ57               71                        1GB     1.2GB   14.5        512                        22.8   8.3
RA60               42                        205             41.7        512         1600   3600     50ms  8.3   REMOVABLE
RA70               33+1                      280     350     19.5        512   11+1  1507   4000    27.0ms 7.5
RA80
RA81  1248    3    51   14  152083   891072  440
RA82  1423    3    57   15  152083  1216665  622     855     24    6     512   15           3600    32.3   8.3
RA90               69+1                      1.2GB   1.6GB   16ms  5.5ms 512   13           3600           8.3ms
RA92                                         1.5GB   2.0GB   18.5
RF30               37+1                      150     200     21    3.0   512         1331   3600    29.3   8.3
RF31                                         381     499     15.3                                   23.6
RF71                                         400     532     21
RF72               50+1                      1.0GB   1.4GB   13.3        512         1861           21.7   8.3
------------------------------------------------------------------------------------------------------------------

DEC HARD DISK EQUIVILENTS
=========================
RD31  ST225
RD32  ST241-1 (ST251)
RD33
RD50  ST506
RD51  ST412
RD52  Quantum Q540/Atasi 3046/Evotek ET-5540 (almost)
RD53  Micropolis 1325 with jumper R7 inserted (1335 also works)
RD54  

RD31 20MB    4   615
RD32 42MB    6   820
RD33
RD50 5MB     4   153
RD51 10MB    4   306
RD52 30MB    8   512
RD53 70MB    8  1024
RD54 159MB

General Disk Information
========================

                                  --Sector location ranges(DOS 3.xx)--
Disk  Disk    Sectrs Media  CLust Boot FAT-1 FAT-2   Root    Data Area
Size  Type    perTrk Dscrpt Size  ------------------------------------
-------------------------------------------------------------------------
10M    HARD     17    F8    4096   0  1-8     9-16   17-48   49-20720
20M    HARD     17    F8    2048~  0  1-40   41-80   81-112 113-40457
21M    HARD     17    F8    2048~  0  1-41   42-82   83-114 115-41666
30M    HARD     17    F8    2048~  0  1-60   61-120 121-152 153-60157
31M    HARD     17    F8    2048~  0  1-61   62-122 123-154 155-62202
32M    HARD     17    F8    2048~  0  1-63   64-126 127-158 159-63856
33M    HARD     17    F8    2048~  0  1-64   65-128 129-160 161-65516
60M    HARD     17    F8    2048~  0  1-118 119-236 237-268 269-120596
-------------------------------------------------------------------------
Cluster size=8192 if done under DOS 2.xx



Disk Controller Connectors:
===========================

XT Fixed Disk Controller Connector J1:

  Pin    Discription             Direction
   1     Ground
   2     -Reduced write current  From controller
   3     Ground
   4     RESERVED
   5     Ground
   6     -Write gate             From controller
   7     Ground
   8     -Seek complete          From drive
   9     Ground
  10     -Track 00               From drive
  11     Ground
  12     -Write Fault            From drive
  13     Ground
  14     -Head select 2^0        From controller
  15     Ground
  16     RESERVED
  17     Ground
  18     -Head select 2^1        From controller
  19     Ground
  20     -Index                  From drive
  21     Ground
  22     -Ready                  From drive
  23     Ground
  24     -Step                   From controller
  25     Ground
  26     -Drive select 1         From controller
  27     Ground
  28     -Drive select 2         From controller
  29     Ground
  30     RESERVED
  31     Ground
  32     RESERVED
  33     Ground
  34     -Direction in           From controller

XT Fixed Disk Controller Connectors J2 and J3:

  Pin    Discription      Direction
   1     Drive select     From drive
   2     Ground
   3     Reserved
   4     Ground
   5     NO PIN (key)
   6     Ground
   7     RESERVED
   8     Ground
   9     UNUSED
  10     UNUSED
  11     Ground
  12     Ground
  13     MFM write data   From controller
  14     -MFM write data  From controller
  15     Ground
  16     Ground
  17     MFM read data    From drive
  18     -MFM read data   From drive
  19     Ground
  20     Ground
