This group of modules is designed to help you manage your system.
All modules in this group are system-related and serve as valuable tools
for ensuring that your system runs properly and your data is managed
Create a backup of both your
system and data using . However, the backup
created by the module does not
include the entire system. The system is backed up by saving important
storage areas on your hard disk that may be crucial when trying to
restore a system, such as the partition table or master boot
record (MBR). It can also include the XML configuration acquired
from the installation of the system, which is used for AutoYaST. Data is
up by saving changed files of packages accessible on installation
media, entire packages that are unaccessible (such as online updates),
and files not belonging to packages, such as many of the
configuration files in /etc or the directories
restore your system from a backup archive created with . First, specify where the archives are located
(removable media, local hard disks, or network file systems). Click
to view the
description and contents of the individual archives and select
what to restore from the archives.
You can also uninstall packages that were
added since the last backup and reinstall packages that were
deleted since the last backup. These two steps enable you to restore the
exact system state at the time of the last backup.
WARNING: System Restoration
Because this module normally installs, replaces, or uninstalls many
packages and files, use it only if you have experience with backups.
Otherwise you may lose data.
7.5.3 Boot and Rescue Disks
Create boot and rescue disks with . These floppy disks
are helpful if the boot configuration of your system is damaged. The rescue
disk is especially necessary if the file system of the root partition is
The following options are available:
Use this option to create the standard boot floppies with which to boot
an installed system. Depending on the architecture, the actual number of
boot disks may vary, but you should create all the boot disks presented
in the dialog because all these disks are necessary for booting. They
are also needed for starting the rescue system.
This disk contains a special environment that allows you to perform
maintenance tasks in your installed system, such as checking and
repairing the file system and updating the boot loader. To start the
rescue system, boot with the standard boot disks then select
. Insert the
rescue disk when prompted.
Use this to write any existing floppy disk image from the hard disk
to a floppy disk.
With this, enter a URL and authentication data to download a floppy
disk image from the Internet.
To create one of these floppy disks, select the corresponding option and
click . Insert a floppy disk when prompted. Click
again to create the floppy disk.
The logical volume manager (LVM) is a tool for custom partitioning of
hard disks with logical drives. Find information about LVM
in Section 6.1,
With the expert dialog, shown in Figure 7-4,
manually modify the partitioning of one or several hard disks. Partitions
can be added, deleted, resized, and edited. Also access the soft RAID and LVM configuration from this YaST module.
Although it is possible to modify the partitions in the installed system,
this should be handled only by experts. Otherwise the risk of making a
mistake that causes data loss is very high. If you repartition a hard disk
reboot the system right afterwards. It is safer to use the rescue
system than repartition the system while running.
Figure 7-4 The YaST Partitioner
All existing or suggested partitions on all connected hard disks are
displayed in the list of the YaST
dialog. Entire hard disks are listed as
devices without numbers, such as /dev/hda or
/dev/sda. Partitions are
listed as parts of these devices, such as /dev/hda1 or
/dev/sda1. The size, type,
file system, and mount point of the hard disks and their partitions are also
displayed. The mount point describes where the partition appears in the
Linux file system tree.
If you run the expert dialog during installation, any free hard disk space is
also listed and automatically selected. To provide more disk space to ,
free the needed space starting from the bottom toward the top of the list
(starting from the last partition of a hard disk toward the first). For
example, if you have three partitions, you cannot use the second exclusively
for and retain the third and first for other operating
Creating a Partition
Select . If several hard disks are connected, a
selection dialog appears in which to select a hard disk for the new
partition. Then specify the partition type (primary or extended). Create up
to four primary partitions or up to three primary partitions and one
extended partition. Within the extended partition, create several logical
Select the file system to use and a mount point, if necessary. YaST
suggests a mount point for each partition created. Details of the parameters
are provided in the next section. Select to apply your
changes. The new partition is then listed in the partition table. If you
click , the current values are
adopted. During installation you are then returned to the suggestion
When you create a new partition or modify an existing partition, set various
parameters. For new partitions, suitable parameters are set by
YaST and usually do not require any modification. To make manual
settings, proceed as follows:
Select the partition.
Click to edit the partition and set the parameters:
File System ID
Even if you do not want to format the partition at this
stage, assign it a file system ID to ensure that the partition is
registered correctly. Possible values include ,
, , and . For LVM and RAID details, refer to
LVM Configuration and
Soft RAID Configuration.
To format the partition immediately within the scope of the
installation, specify one of the following file systems for the
partition: , ,
, , or
. Refer to Section 21.0,
File Systems in Linux for
details on the various file systems.
File System Options
Set various parameters for the selected file system here.
Encrypt File System
If you activate the encryption, all data is written to the hard disk in
encrypted form. This increases the security of sensitive data, but
slightly reduces the system speed, because the encryption takes some
time. More information about the encryption of file systems is provided
in Section 41.0,
Encrypting Partitions and Files.
Here, specify various parameters for the administration file of the
file systems (/etc/fstab). For example,
change the file system identification from the device name, which is
default, to a volume label. In the volume label, you can use all
characters except / and space.
Specify the directory at which the partition should be mounted in the
file system tree. Select from various YaST proposals or enter any
Select to activate the partition.
If you partition manually, create a swap partition of at least 256 MB.
The swap partition is used to free the main memory of data that is not used
at the present moment. This keeps the main memory free for the most
opens a menu containing the
- Reread Partition Table
Rereads the partitioning from disk. For example, you need this
after manual partitioning in the text console.
- Delete Partition Table and Disk Label
This completely overwrites the old partition table. For example,
this can be helpful if you have problems with unconventional disk labels.
Using this method, all data on the hard disk is lost.
More Partitioning Tips
If the partitioning is performed by YaST and other partitions are detected
in the system, these partitions are also entered in the file
to enable easy access to this data. This file contains all
partitions in the system with their properties, such as the file system,
mount point, and user permissions.
/etc/fstab: Partition Data
/dev/sda1 /data1 auto noauto,user 0 0
/dev/sda5 /data2 auto noauto,user 0 0
/dev/sda6 /data3 auto noauto,user 0 0
The partitions, regardless of whether they are Linux or FAT partitions, are
specified with the options noauto and
user. This allows any user to mount or unmount these
partitions as needed. For security reasons, YaST does not automatically
enter the exec option here, which is needed for executing
programs from the location. However, to run programs from there, you can
enter this option manually.
This measure is necessary if you encounter system messages
such as bad interpreter or Permission denied.
Partitioning and LVM
From the expert partitioner, access the LVM configuration with
(see Section 6.1,
However, if a working LVM configuration already exists on your system, it is
automatically activated as soon as you enter the LVM configuration for the
first time in a session. In this case, any disks containing a partition
belonging to an activated volume group cannot be repartitioned because the
Linux kernel cannot reread the modified partition table of a hard disk when
any partition on this disk is in use. However, if you already have a
functioning LVM configuration on your system, physical repartitioning should
not be necessary. Instead, change the configuration of the logical volumes.
At the beginning of the physical volumes (PVs), information about the volume
is written to the partition. To reuse such a partition for other non-LVM
purposes, it is advisable to delete the beginning of this volume. For
example, in the VG system and PV
/dev/sda2, do this with the command
dd if=/dev/zero of=/dev/sda2 bs=512
WARNING: File System for Booting
The file system used for booting (the root file system or
/boot) must not be stored on an LVM logical volume.
Instead, store it on a normal physical partition.
7.5.7 PCI Device Drivers
Each kernel driver contains a list of device IDs of all devices it
a new device is not in any driver's database, the device is treated as
unsupported, even if it can be used with an existing driver. With this
YaST module from section, you can add PCI IDs. Only
advanced users should attempt to use this YaST module.
Figure 7-5 Adding a PCI ID
To add an ID, click and select how to assign it:
by selecting a PCI device from a list or by manually entering PCI values.
In the first option, select the PCI device from the provided list then
enter the driver
or directory name. If the directory is left empty, the driver name is used
directory name. When assigning PCI ID values manually, enter the
data to set up a PCI ID. Click to save your changes.
To edit a PCI ID, select the device driver from the list and click
. Edit the information and click
to save your changes. To delete an ID, select the driver and click
The ID immediately disappears from the list. When finished, click
7.5.8 Power Management
The module helps you work
with saving energy technologies. It is especially important
on laptops to extend their operational time.
Find detailed information about using this module in Section 27.6,
The YaST Power Management Module.
7.5.9 Powertweak Configuration
Powertweak is a SUSE Linux utility for tweaking your system to peak
performance by tuning some kernel and hardware configurations. It should be
used only by advanced users. After
starting it with , it detects your system
settings and lists them in
tree form in the left frame of the module. You can
also use to find a configuration
variable. Select the option to
tweak to display it on the screen along with its directory and
settings. To save the settings, click then
confirm it by clicking .
7.5.10 Profile Manager
Create, manage, and switch among system
configurations with , the
YaST system configuration profile management (SCPM) module. This is
especially useful for mobile computers that are
used in different locations (in different networks) and by different
users. Nevertheless, this feature is useful even for stationary
machines, because it enables the use of various hardware components or
test configurations. For more information about
SCPM basics and
handling, refer to Section 26.0,
System Configuration Profile Management.
7.5.12 /etc/sysconfig Editor
The directory /etc/sysconfig contains the files
with the most important settings for SUSE Linux Enterprise. Use
to modify the values and save them
to the individual configuration files. Generally,
manual editing is not necessary, because the files are automatically
adapted when a package is installed or a service is configured. More
information about /etc/sysconfig
and the YaST sysconfig editor is available in
Changing the System Configuration Using the YaST sysconfig
7.5.13 Time and Date Configuration
The time zone is initially set during installation, but you can
change it with . Also use this to change
the current system date and time.
To change the time zone, select the region in the left column and the
location or time zone in the right column. With , set whether the system clock should use
or (Coordinated Universal Time).
is often used in Linux systems. Machines
with additional operating systems, such as Microsoft Windows,
mostly use local time.
Set the current system time and date with . In
the dialog that opens, modify the time and date by entering new values or
adjusting them with the arrow buttons. Press to
save the changes.
7.5.14 Language Selection
The primary and secondary languages for your system are set
during installation. However, they can be changed at any
time using . The primary language set in YaST
applies to the entire system, including YaST and the desktop
environment. This is the language you expect to use most of the time.
Secondary languages are languages that are sometimes needed by
users for a variety of purposes, such as desktop language or word
Figure 7-6 Setting the Language
Select the main language to use for your system in . To adjust the keyboard or time zone to this setting,
enable or .
Set how locale variables are set for the root user with
. Also use to set the
primary language to a
dialect not available in the main list.
These settings are written into the file