Name
hd — MFM/IDE hard disk devices
DESCRIPTION
The hd* devices
are block devices to access MFM/IDE hard disk drives in raw
mode. The master drive on the primary IDE controller (major
device number 3) is hda; the slave drive is
hdb. The master
drive of the second controller (major device number 22) is
hdc and the slave
hdd.
General IDE block device names have the form hdX, or hdXP, where X
is a letter denoting the physical drive, and P is a number denoting the partition on
that physical drive. The first form, hdX, is used to address the
whole drive. Partition numbers are assigned in the order the
partitions are discovered, and only non-empty, non-extended
partitions get a number. However, partition numbers 1-4 are
given to the four partitions described in the MBR (the
`primary' partitions), regardless of whether they are unused
or extended. Thus, the first logical partition will be
hdX5. Both DOS-type partitioning
and BSD-disklabel partitioning are supported. You can have at
most 63 partitions on an IDE disk.
For example, /dev/hda refers
to all of the first IDE drive in the system; and /dev/hdb3 refers to the third DOS `primary'
partition on the second one.
They are typically created by:
mknod −m 660 /dev/hda b 3 0
mknod −m 660 /dev/hda1 b 3 1
mknod −m 660 /dev/hda2 b 3 2
...
mknod −m 660 /dev/hda8 b 3 8
mknod −m 660 /dev/hdb b 3 64
mknod −m 660 /dev/hdb1 b 3 65
mknod −m 660 /dev/hdb2 b 3 66
...
mknod −m 660 /dev/hdb8 b 3 72
chown root:disk /dev/hd*
SEE ALSO
chown(1), mknod(1), sd(4), mount(8)
Copyright (c) 1993 Michael Haardt (michael@moria.de), Fri Apr 2 11:32:09 MET DST 1993
This is free documentation; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The GNU General Public License's references to "object code"
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This manual is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this manual; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
USA.
Modified Sat Jul 24 16:56:20 1993 by Rik Faith <faith@cs.unc.edu>
Modified Mon Oct 21 21:38:51 1996 by Eric S. Raymond <esr@thyrsus.com>
(and some more by aeb)
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