Penguin
Annotated edit history of hd(4) version 1, including all changes. View license author blame.
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1 perry 1 HD
2 !!!HD
3 NAME
4 DESCRIPTION
5 FILES
6 SEE ALSO
7 ----
8 !!NAME
9
10
11 hd - MFM/IDE hard disk devices
12 !!DESCRIPTION
13
14
15 The __hd*__ devices are block devices to access MFM/IDE
16 hard disk drives in raw mode. The master drive on the
17 primary IDE controller (major device number 3) is
18 __hda__; the slave drive is __hdb__. The master drive
19 of the second controller (major device number 22) is
20 __hdc__ and the slave __hdd__.
21
22
23 General IDE block device names have the form
24 __hd__''X'', or __hd__''XP'', where ''X'' is
25 a letter denoting the physical drive, and ''P'' is a
26 number denoting the partition on that physical drive. The
27 first form, __hd__''X,'' is used to address the whole
28 drive. Partition numbers are assigned in the order the
29 partitions are discovered, and only non-empty, non-extended
30 partitions get a number. However, partition numbers 1-4 are
31 given to the four partitions described in the MBR (the
32 `primary' partitions), regardless of whether they are unused
33 or extended. Thus, the first logical partition will be
34 __hd__''X''__5__. Both DOS-type partitioning and
35 BSD-disklabel partitioning are supported. You can have at
36 most 63 partitions on an IDE disk.
37
38
39 For example, __/dev/hda__ refers to all of the first IDE
40 drive in the system; and __/dev/hdb3__ refers to the
41 third DOS `primary' partition on the second
42 one.
43
44
45 They are typically created by:
46
47
48 mknod -m 660 /dev/hda b 3 0
49 mknod -m 660 /dev/hda1 b 3 1
50 mknod -m 660 /dev/hda2 b 3 2
51 ...
52 mknod -m 660 /dev/hda8 b 3 8
53 mknod -m 660 /dev/hdb b 3 64
54 mknod -m 660 /dev/hdb1 b 3 65
55 mknod -m 660 /dev/hdb2 b 3 66
56 ...
57 mknod -m 660 /dev/hdb8 b 3 72
58 chown root:disk /dev/hd*
59 !!FILES
60
61
62 /dev/hd*
63 !!SEE ALSO
64
65
66 mknod(1), chown(1), mount(8),
67 sd(4)
68 ----
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