User guide

106 Copyright © Acronis International GmbH, 2002-2012.
Acronis Backup & Recovery 11.5 attempts to map the selected disks to the target disks as
described in the "How the automatic mapping works" (p. 107) section. If you are unsatisfied with
the mapping result, you can re-map disks manually. To do this, you have to unmap the disks in a
reverse order; that is, the last mapped disk should be unmapped first. Then, map the disks
manually as described below.
Disk #:
Disk # (MODEL) (p. 106)
Select the destination disk for each of the source disks.
NT signature (p. 106)
Select the way the recovered disk's signature will be handled. The disk signature is used by
Windows and the Linux kernel version 2.6 and later.
Disk destination
To specify a destination disk:
1. Select a disk where you want the selected disk to recover to. The destination disk's space should
be at least the same size as the uncompressed image data.
2. Click OK.
All the data stored on the target disk will be replaced by the backed up data, so be careful and watch out for
non-backed-up data that you might need.
NT signature
The NT signature is a record that is kept in the MBR. It uniquely identifies the disk for the operating
system.
When recovering a disk containing a system volume, you can choose what to do with the NT
signature of the target disk. Specify any of the following parameters:
 Select automatically
The software will keep the NT signature of the target disk if it is the same as the NT signature
stored in the backup. (In other words, if you recover the disk to the same disk that was backed
up.) Otherwise, the software will generate a new NT signature for the target disk.
This is the default selection recommended in most cases. Use the following settings only if you
absolutely need to.
 Create new
Acronis Backup & Recovery 11.5 will generate a new NT signature for the target hard disk.
 Recover from backup
Acronis Backup & Recovery 11.5 will replace the NT signature of the target hard disk with one
from the disk backup.
Note: You should be absolutely sure that none of the existing disks on this machine has the same NT
signature. Otherwise, the operating system runs from the first disk at the startup; discovers the same
signature on the second one, automatically generates a new unique NT signature and assigns it to the
second disk. As a result, all the volumes on the second disk will lose their letters, all paths will be invalid on
the disk, and programs won't find their files. The operating system on that disk will be unbootable.
Recovering the disk signature may be desirable due to the following reasons: