User`s guide

130 Copyright © Acronis, Inc., 2000-2010
title Red Hat Enterprise Linux Server (2.6.24.4)
root (hd0,0)
kernel /vmlinuz-2.6.24.4 ro root=/dev/sda2 rhgb quiet
initrd /initrd-2.6.24.4.img
The lines starting with title, root, kernel, and initrd respectively determine:
 The title of the menu item.
 The device on which the Linux kernel is located—typically, this is the boot partition or the
root partition, such as root (hd0,0) in this example.
 The path to the kernel on that device and the root partition—in this example, the path is
/vmlinuz-2.6.24.4 and the root partition is /dev/sda2. You can specify the root partition by
label (such as root=LABEL=/), identifier (in the form root=UUID=some_uuid), or device name
(such as root=/dev/sda2).
 The path to the initrd service on that device.
7. Edit the file /mnt/system/etc/fstab to correct the names of any devices that have changed as a
result of the recovery.
8. Start the GRUB shell by running one of the following commands:
chroot /mnt/system/ /sbin/grub
or
chroot /mnt/system/ /usr/sbin/grub
9. Specify the disk on which GRUB is located—typically, the boot or root partition:
root (hd0,0)
10. Install GRUB. For example, to install GRUB in the master boot record (MBR) of the first disk, run
the following command:
setup (hd0)
11. Exit the GRUB shell:
quit
12. Unmount the mounted file systems and then reboot:
umount /mnt/system/dev/
umount /mnt/system/proc/
umount /mnt/system/boot/
umount /mnt/system/
reboot
13. Reconfigure the bootloader by using tools and documentation from the Linux distribution that
you use. For example, in Debian and Ubuntu, you may need to edit some commented lines in the
/boot/grub/menu.lst file and then run the update-grub script; otherwise, the changes might not
take effect.
6.4 Validating vaults, archives and backups
Validation is an operation that checks the possibility of data recovery from a backup.
Validation of a file backup imitates recovery of all files from the backup to a dummy destination.
Validation of a disk or volume backup calculates a checksum for every data block saved in the
backup. Both procedures are resource-intensive.
Validation of an archive will validate all the archive's backups. A vault (or a location) validation will
validate all archives stored in this vault (location).