Installation guide

• rpm for installing or upgrading software
• joe for editing configuration files
Note
If you try to start other popular editors such as emacs, pico, or vi, the joe editor
is started.
2.1. Reinstalling the Boot Loader
In many cases, the GRUB boot loader can mistakenly be deleted, corrupted, or replaced by oth-
er operating systems.
The following steps detail the process on how GRUB is reinstalled on the master boot record:
• Boot the system from an installation boot medium.
• Type linux rescue at the installation boot prompt to enter the rescue environment.
• Type chroot /mnt/sysimage to mount the root partition.
• Type /sbin/grub-install /dev/hda to reinstall the GRUB boot loader, where /dev/hda is the
boot partition.
• Review the /boot/grub/grub.conf file, as additional entries may be needed for GRUB to con-
trol additional operating systems.
• Reboot the system.
3. Booting into Single-User Mode
One of the advantages of single-user mode is that you do not need a boot CD-ROM; however, it
does not give you the option to mount the file systems as read-only or not mount them at all.
If your system boots, but does not allow you to log in when it has completed booting, try single-
user mode.
In single-user mode, your computer boots to runlevel 1. Your local file systems are mounted, but
your network is not activated. You have a usable system maintenance shell. Unlike rescue
mode, single-user mode automatically tries to mount your file system. Do not use single-user
mode if your file system cannot be mounted successfully. You cannot use single-user mode if
the runlevel 1 configuration on your system is corrupted.
On an x86 system using GRUB, use the following steps to boot into single-user mode:
1. At the GRUB splash screen at boot time, press any key to enter the GRUB interactive
menu.
2.1. Reinstalling the Boot Loader
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