The script MAKEDEV(8) should be used to create the special files; if a special file needs to be created by hand consult mknod(8). It is recommended as a security precaution to not create special files for devices which may never be installed.
The first sector of each disk contains both a first-stage bootstrap program and a disk label containing geometry information and partition layouts (see disklabel(5). This sector is normally write-protected, and disk-to-disk copies should avoid copying this sector. The label may be updated with disklabel(8), which can also be used to write-enable and write-disable the sector. The next 15 sectors contain a second-stage bootstrap program.
Special file names begin with `hp ' and `rhp ' for the block and character files respectively. The second component of the name, a drive unit number in the range of zero to seven, is represented by a `? ' in the disk layouts below. The last component is the file system partition designated by a letter from `a ' to `h ' and also corresponds to a minor device number set: zero to seven, eight to 15, 16 to 23 and so forth for drive zero, drive two and drive three respectively. The following disks are supported: RM03 RM05 RP06 RM80 RP05 RP07 ML11A ML11B CDC 9775 CDC 9730 AMPEX Capricorn (32 sectors/track), FUJITSU Eagle (48 sectors/track), FUJITSU 2361, and AMPEX 9300. The default layout and size (in sectors) of the partitions for these drives:
RM03 partitions
disk start length cyls
hp?a 0 15884 0-99
hp?b 16000 33440 100-309
hp?c 0 131680 0-822
hp?d 49600 15884 309-408
hp?e 65440 55936 409-758
hp?f 121440 10080 759-822
hp?g 49600 82080 309-822
RM05 partitions
disk start length cyls
hp?a 0 15884 0-26
hp?b 16416 33440 27-81
hp?c 0 500384 0-822
hp?d 341696 15884 562-588
hp?e 358112 55936 589-680
hp?f 414048 86176 681-822
hp?g 341696 158528 562-822
hp?h 49856 291346 82-561
RP06 partitions
disk start length cyls
hp?a 0 15884 0-37
hp?b 15884 33440 38-117
hp?c 0 340670 0-814
hp?d 49324 15884 118-155
hp?e 65208 55936 156-289
hp?f 121220 219296 290-814
hp?g 49324 291192 118-814
RM80 partitions
disk start length cyls
hp?a 0 15884 0-36
hp?b 16058 33440 37-114
hp?c 0 242606 0-558
hp?d 49910 15884 115-151
hp?e 68096 55936 152-280
hp?f 125888 120466 281-558
hp?g 49910 192510 115-558
RP05 partitions
disk start length cyls
hp?a 0 15884 0-37
hp?b 15884 33440 38-117
hp?c 0 171798 0-410
hp?d 2242 15884 118-155
hp?e 65208 55936 156-289
hp?f 121220 50424 290-410
hp?g 2242 122320 118-410
RP07 partitions
disk start length cyls
hp?a 0 15884 0-9
hp?b 16000 66880 10-51
hp?c 0 1008000 0-629
hp?d 376000 15884 235-244
hp?e 392000 307200 245-436
hp?f 699200 308600 437-629
hp?g 376000 631800 235-629
hp?h 83200 291346 52-234
CDC 9775 partitions
disk start length cyls
hp?a 0 15884 0-12
hp?b 16640 66880 13-65
hp?c 0 1077760 0-841
hp?d 376320 15884 294-306
hp?e 392960 307200 307-546
hp?f 700160 377440 547-841
hp?g 376320 701280 294-841
hp?h 84480 291346 66-293
CDC 9730 partitions
disk start length cyls
hp?a 0 15884 0-49
hp?b 16000 33440 50-154
hp?c 0 263360 0-822
hp?d 49600 15884 155-204
hp?e 65600 55936 205-379
hp?f 121600 141600 380-822
hp?g 49600 213600 155-822
AMPEX Capricorn partitions
disk start length cyls
hp?a 0 15884 0-31
hp?b 16384 33440 32-97
hp?c 0 524288 0-1023
hp?d 342016 15884 668-699
hp?e 358400 55936 700-809
hp?f 414720 109408 810-1023
hp?g 342016 182112 668-1023
hp?h 50176 291346 98-667
FUJITSU Eagle partitions
disk start length cyls
hp?a 0 15884 0-16
hp?b 16320 66880 17-86
hp?c 0 808320 0-841
hp?d 375360 15884 391-407
hp?e 391680 55936 408-727
hp?f 698880 109248 728-841
hp?g 375360 432768 391-841
hp?h 83520 291346 87-390
FUJITSU 2361 partitions
disk start length cyls
hp?a 0 15884 0-12
hp?b 16640 66880 13-65
hp?c 0 1077760 0-841
hp?d 376320 15884 294-306
hp?e 392960 307200 307-546
hp?f 700160 377408 547-841
hp?g 363520 701248 294-841
hp?h 84480 291346 66-293
AMPEX 9300 partitions
disk start length cyl
hp?a 0 15884 0-26
hp?b 16416 33440 27-81
hp?c 0 495520 0-814
hp?d 341696 15884 562-588
hp?e 358112 55936 589-680
hp?f 414048 81312 681-814
hp?g 341696 153664 562-814
hp?h 49856 291346 82-561
The hp?a partition is normally used for the root file system, the hp?b partition as a paging area, and the hp?c partition for pack-pack copying (it maps the entire disk). On disks larger than about 205 Megabytes, the hp?h partition is inserted prior to the hp?d or hp?g partition; the hp?g partition then maps the remainder of the pack. All disk partition tables are calculated using the diskpart(8) program.
A program to analyze the logged error information (even in its present reduced form) is needed.