Avaya R3.0 manual Booting into emergency mode

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Booting into emergency mode

Booting into emergency mode

Booting into emergency mode

In emergency mode, you are booted into the most minimal environment. The root file system is mounted read-only and the setup is minimal.

The advantage of emergency mode over single-user mode is that the init files are not loaded. If init is corrupted or not working, you can still mount file systems to recover data that could be lost during a reinstallation.

To boot into emergency mode, use the same method as described for single-user mode in Booting into single-user mode.

On an x305 IBM Server system using GRUB as the boot loader, use the following steps to boot into emergency mode:

1.If you have a GRUB password configured, type p and enter the password.

2.Select Red Hat Enterprise Linux with the version of the kernel that you wish to boot and type a to append the line.

3.Go to the end of the line and type emergency as a separate word. Press [Enter] to exit edit mode.

Tip:

Press the [Spacebar] and then type emergency.

4.Back at the GRUB screen, type b to boot into single-user mode.

-On an x305 IBM Server system using LILO as the boot loader, at the LILO boot prompt, type: linux single

Note:

If you are using the graphical LILO, press Ctrl-xto exit the graphical screen and go to the boot: prompt.

- For all other platforms, specify emergency as a kernel parameter at the boot prompt.

Issue 6 August 2005 31

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Contents 19-300174 Issue 6 August Secure Services Gateway SSGMaintenance Guide in support of the Secure Access and Control Offer SAC R3.0Email totalware@gwsmail.com 2005 Avaya Inc. All Rights ReservedChapter 3 Server Initialization and Shutdown Chapter 1 Maintenance OverviewChapter 2 Hardware Upgrade and Maintenance Chapter 5 Operating System Recovery4 Secure Services Gateway SSG Maintenance Guide Chapter 6 SSG Configuration Backup and RestoreIndex ContentsOverview Related resources Linux operating system manuals Chapter 1 Maintenance OverviewChapter contents OverviewDocument Title ContentRelated resources Table 1 Related Resources2 of Table 1 Related Resources continued3. Under the column Support Resources, go to Documentation Linux operating system manualsIn this chapter Chapter 2 Hardware Upgrade and MaintenanceInstallation guidelines Installation guidelines Removing the cover of the x305 IBM serverHandling static sensitive devices System reliability guidelinesGeneral safety guidelines Replacing the hard drive in an x305 IBM server Replacing the hard driveReplacing the hard drive in an x306 IBM server 4 Replace the hard drive. x305 see Replacing the hard drive in an Tasks to replace the hard driveTask DescriptionRemoving the cover of the x305 IBM server 3. Installing the new hard drive in the x305 IBM serverRead General safety guidelines and Handling static sensitive devices Replacing the hard drive in an x305 IBM serverFigure 1 Captive screws on cover Figure 2 Removing and replacing the drive cage Removing the hard drive from the x305 IBM serverReplacing the cover of the x305 IBM server Installing the new hard drive in the x305 IBM serverRemoving the hard drive from the x306 IBM server 2. Installing the new hard drive in the x306 IBM serverFigure 3 Removing and installing the hard drive Replacing the hard drive in an x306 IBM serverReplacing the x305 IBM server’s RSA Installing the new hard drive in the x306 IBM server20 Secure Services Gateway SSG Maintenance Guide Replacing the server’s dual NICServer initialization Chapter 3 Server Initialization and ShutdownServer initialization System shutdown System shutdown Gathering system information Monitoring system processes Chapter 4 Operating System MonitoringGathering system information Monitoring system processesMemory usage Table 3 Interactive Commands Command DescriptionVirtual memory File systemsSpace used by files in a directory Additional resources Hardware/software problems Booting into single-user mode Chapter 5 Operating System RecoveryHardware/software problems Root passwordlinux rescue Booting into rescue modefdisk -l one sh-2.05b#chroot /mnt/sysimage mount -t ext3 /dev/hda5 /fooBooting into single-user mode Booting into emergency mode 32 Secure Services Gateway SSG Maintenance Guide Backing up the SSG configuration Chapter 6 SSG Configuration Backup and RestoreBacking up the SSG configuration Restoring the SSG configuration SSG Configuration Backup and Restore Figure 4 Edit Backup Scheduler Configuration Page34 Secure Services Gateway SSG Maintenance Guide 6. Click Save Changes c. tar zfx ~/SSG-Product Id-Date-Time.tgz Restoring the SSG configurationpgrestore -v -p 6543 -d avssgdb -a -Ft --no-owner dbdumpfilename.tar a. mkdir tempdir b. cd tempdirIndex Index38 Secure Services Gateway SSG Maintenance Guide