Linux disks and partition names may be different from other operatingsystems. You need to know the names that Linux uses when you createand mount partitions. Here's the basic naming scheme:
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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, alsoknown 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/hdcand/dev/hdd,respectively. Newer IDE controllers can actually have two channels,effectively acting like two controllers.
The partitions on each disk are represented by appending a decimalnumber to the disk name: sda1 andsda2 represent the first andsecond partitions of the first SCSI disk drive in your system.
Here is a real-life example. Let's assume you have a system with 2SCSI 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 thesda drive has 3 partitions on it, these will benamed sda1, sda2, andsda3. The same applies to thesdb 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 thiscase is to watch the boot messages, assuming you know the drive modelsand/or capacities.
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Linux represents the primary partitions as the drive name, plus thenumbers 1 through 4. For example, the first primary partition on thefirst IDE drive is /dev/hda1. The logical partitions arenumbered starting at 5, so the first logical partition on that samedrive is /dev/hda5. Remember that the extendedpartition, that is, the primary partition holding the logicalpartitions, is not usable by itself. This applies to SCSI disks aswell as IDE disks.