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
I hd X\c
, or
I hd XP\c
, where
X
is a letter denoting the physical drive, and
P
is a number denoting the partition on that physical drive.
The first form,
I hd X,
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
I hd X 5\c
.
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*
FILES
/dev/hd*
SEE ALSO
ČLÁNKY DO MAILU