From 1ea73eea5ecc6a8ed901316049259aee737ee554 Mon Sep 17 00:00:00 2001 From: Joey Hess Date: Fri, 7 Oct 2005 19:51:38 +0000 Subject: move manual to top-level directory, split out of debian-installer package --- da/partitioning/device-names.xml | 161 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 da/partitioning/device-names.xml (limited to 'da/partitioning/device-names.xml') diff --git a/da/partitioning/device-names.xml b/da/partitioning/device-names.xml new file mode 100644 index 000000000..354845a93 --- /dev/null +++ b/da/partitioning/device-names.xml @@ -0,0 +1,161 @@ + + + + + + Device Names in Linux + + +Linux disks and partition names may be different from other operating +systems. You need to know the names that Linux uses when you create +and mount partitions. Here's the basic naming scheme: + + + + + +The first floppy drive is named /dev/fd0. + + + + +The second floppy drive is named /dev/fd1. + + + + +The first SCSI disk (SCSI ID address-wise) is named +/dev/sda. + + + + +The second SCSI disk (address-wise) is named +/dev/sdb, and so on. + + + + +The first SCSI CD-ROM is named /dev/scd0, also +known as /dev/sr0. + + + + +The master disk on IDE primary controller is named +/dev/hda. + + + + +The slave disk on IDE primary controller is named +/dev/hdb. + + + + +The master and slave disks of the secondary controller can be called +/dev/hdc and /dev/hdd, +respectively. Newer IDE controllers can actually have two channels, +effectively acting like two controllers. + + +The letters may differ from what shows in the mac program pdisk +(i.e. what shows up as /dev/hdc on pdisk may show +up as /dev/hda in Debian). + + + + + + +The first XT disk is named /dev/xda. + + + + +The second XT disk is named /dev/xdb. + + + + +The first ACSI device is named /dev/ada, the +second is named /dev/adb. + + + + + + + +The first DASD device is named +/dev/dasda. + + + + +The second DASD device is named +/dev/dasdb, and so on. + + + + + + +The partitions on each disk are represented by appending a decimal +number to the disk name: sda1 and +sda2 represent the first and +second partitions of the first SCSI disk drive in your system. + + + +Here is a real-life example. Let's assume you have a system with 2 +SCSI disks, one at SCSI address 2 and the other at SCSI address 4. +The first disk (at address 2) is then named sda, +and the second sdb. If the +sda drive has 3 partitions on it, these will be +named sda1, sda2, and +sda3. The same applies to the +sdb disk and its partitions. + + + +Note that if you have two SCSI host bus adapters (i.e., controllers), +the order of the drives can get confusing. The best solution in this +case is to watch the boot messages, assuming you know the drive models +and/or capacities. + + + +Linux represents the primary partitions as the drive name, plus the +numbers 1 through 4. For example, the first primary partition on the +first IDE drive is /dev/hda1. The logical partitions are +numbered starting at 5, so the first logical partition on that same +drive is /dev/hda5. Remember that the extended +partition, that is, the primary partition holding the logical +partitions, is not usable by itself. This applies to SCSI disks as +well as IDE disks. + + + +VMEbus systems using the TEAC FC-1 SCSI floppy drive will see it as normal +SCSI disk. To make identification of the drive simpler the installation +software will create a symbolic link to the appropriate device and name +it /dev/sfd0. + + + +Sun disk partitions allow for 8 separate partitions (or slices). The +third partition is usually (and is preferred to have) the ``Whole Disk'' +partition. This partition references all of the sectors of the disk, and +is used by the boot loader (either SILO, or Sun's). + + + +The partitions on each disk are represented by appending a decimal +number to the disk name: dasda1 and +dasda2 represent the first and +second partitions of the first DASD device in your system. + + + -- cgit v1.2.3