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103327 10/30/1991 06:15 PM 05/04/2001 01:46 PM
Yes No
Minor numbers for first 4 hard disks, fdisk partitions, divvy divisions
Keywords
minor numbers 4 access filesystems hard drives disks second third four divvy fdisk partitions division dos unix xenix boot mkdev hd major boot devices nodes major driver
Release
SCO XENIX System V Operating System Generic
SCO UNIX System V/386 Operating System Generic
SCO Open Desktop Generic

Problem
          What are the minor numbers for 4 hard drives, including 4 fdisk
          partitions and 8 divvy divisions?


Solution
          The major number for hard drives is "1".  The "hd" in "hd(40)xenix"
           or "hd(40)unix" implies the major number of "1".  Only one of the 
           four drives listed may have an active partition from which to call
           the other partitions at the "boot :" prompt.  See the (HW) section
           of the manual and /etc/default/boot for information which will 
           allow you to select the default boot string for the various 
           partitions.  This does not apply to MS-DOS.  Only the first parti-
           tion of Drive 0, formatted in MS-DOS 3.2 or 3.3 with a capacity of
           32 MB or less, can be recognized by SCO products.  At the "boot:" 
           prompt, you can type "dos" to access the MS-DOS partition.

                        HARD DRIVE 0            HARD DRIVE 1
                      fdisk partition         fdisk partition
Divvy Division:     1 - 2 - 3 - 4 - Active:  1 - 2 - 3 - 4 - Active:

     0               8  16  24  32  40       72  80  88  96  104
     1               9  17  25  33  41       73  81  89  97  105
     2              10  18  26  34  42       74  82  90  98  106
     3              11  19  27  35  43       75  83  91  99  107
     4              12  20  28  36  44       76  84  92 100  108
     5              13  21  29  37  45       77  85  93 101  109
     6              14  22  30  38  46       78  86  94 102  110
     7              15  23  31  39  47       79  87  95 103  111


                        HARD DRIVE 2            HARD DRIVE 3
                      fdisk partition         fdisk partition
Divvy Division:     1 - 2 - 3 - 4 - Active:  1 - 2 - 3 - 4 - Active:

     0              136 144 152 160 168      200 208 216 224 232
     1              137 145 153 161 169      201 209 217 225 233
     2              138 146 154 162 170      202 210 218 226 234
     3              139 147 155 163 171      203 211 219 227 235
     4              140 148 156 164 172      204 212 220 228 236
     5              141 149 157 165 173      205 213 221 229 237
     6              142 150 158 166 174      206 214 222 230 238
     7              143 151 159 167 175      207 215 223 231 239

          The conventions for SCO XENIX System V, SCO UNIX System V, and 
           SCO Open Desktop follow:

          divvy
          division      Name
          --------      ----------------
            0           usually root
            1           usually swap
            2           usually /u
            3           optional   
            4           optional
            5           optional
            6           usually recover 
            7           Entire partition

SEE ALSO:
           divvy(ADM), fdisk(ADM), hd(HW)

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