Red Hat ENTERPRISE LINUX 3 - FOR IBM S-390 AND IBM ESERVER ZSERIES, Installation Manual

Page: 37 / 108

The partitioning tool used by the installation program is Disk Druid. With the exception of
certain esoteric situations, Disk Druid can handle the partitioning requirements for a typical
installation.
9.1. Graphical Display of DASD Device(s)
Disk Druid offers a graphical representation of your DASD device(s).
Using your mouse, click once to highlight a particular field in the graphical display. Double-click
to edit an existing partition and assign a mount point.
Above the display, you can review the Drive name (/dev/dasda), the Geom (which shows the
hard disk's geometry and consists of three numbers representing the number of cylinders,
heads, and sectors as reported by the hard disk), and the Model of the hard drive as detected
by the installation program.
9.2. Disk Druid's Buttons
These buttons control Disk Druid's actions. They are used to change the attributes of a
partition (for example the file system type and mount point) and also to create RAID devices.
Buttons on this screen are also used to accept the changes you have made, or to exit Disk
Druid. For further explanation, take a look at each button in order:
• Edit: Used to modify attributes of the partition currently selected in the Partitions section.
Selecting Edit opens a dialog box. Some or all of the fields can be edited, depending on
whether the partition information has already been written to disk.
• Make RAID: Make RAID can be used if you want to provide redundancy to any or all disk
partitions. It should only be used if you have experience using RAID. To read more about
RAID, refer to the RAID (Redundant Array of Independent Disks) chapter in the Red Hat
Enterprise Linux System Administration Guide.
• To make a RAID device, you must first create (or reuse existing) software RAID partitions.
Once you have created two or more software RAID partitions, select Make RAID to join the
software RAID partitions into a RAID device.
9.3. Partition Fields
Above the partition hierarchy are labels which present information about the partitions you are
creating. The labels are defined as follows:
• Device: This field displays the partition's device name.
• Mount Point/RAID/Volume: A mount point is the location within the directory hierarchy at
which a volume exists; the volume is "mounted" at this location. This field indicates where the
partition is mounted. If a partition exists, but is not set, then you need to define its mount
Graphical Display of DASD Device(s)
27