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Issue 6 August 2005 27
Chapter 5: Operating System Recovery
Chapter contents
This chapter describes how to recover from problems with the Red Hat Enterprise Linux Server
Edition 3.0 operating system. The topics included in this section are:
● Hardware/software problems
● Booting into single-user mode
● Booting into emergency mode
Hardware/software problems
This category can result from a variety of issue. Examples of this type of problem include:
● failing hard drives, or
● specifying an invalid root device or kernel in the boot loader configuration file.
If these problems occur, you may not be able to reboot the Red Hat Enterprise Linux. You can
use one of the system recovery modes to try and resolve the problem, or, get copies of the most
important files.
Root password
If you forget your root password, do the following:
1. Boot into rescue mode or single-user mode. See Booting into rescue mode
.
2. Use the passwd command to reset the root password.