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BIOS
OS: non-
convertible
Solution
Recover the operating
system to an MBR disk.
2. Perform the
recovery under the
bootable media.
or
After recovery, turn off
the UEFI mode in BIOS.
Otherwise, the
operating system
cannot be booted.
-
Solution
Recover the
operating system to
an MBR disk.
+
The convertible OS
will be automatically
converted to support
BIOS booting.
+
Additional steps
1. Before recovery,
turn on the UEFI
mode in BIOS.
2. Perform the
recovery under the
bootable media.
or
After recovery, turn on
the UEFI mode in BIOS.
Otherwise, the
operating system
cannot be booted.
-
Solution
Recover the operating
system to a GPT disk.
UEFI
OS: non-
convertible
-
Solution
Recover the operating
system to a GPT disk.
5.3.2 Recovering disks
Let's assume you backed up a whole disk (with all its volumes) and want to recover this disk to a
different target platform.
The ability of the recovered system to boot up in different modes depends on the operating systems
installed on the source disk. Operating systems can be convertible i.e. allow changing the boot mode
from BIOS to UEFI and back, or be non-convertible. For the list of convertible operating systems, see
Recovering volumes (p. 138).
When a source disk contains one or more operating systems and all of them are convertible, the
boot mode can be automatically changed. Depending on the current boot mode, the target disk
may be initialized either to GPT or to MBR partitioning style.
If at least one operating system on a source disk is non-convertible (or the source disk contains
any boot volumes of the non-convertible OSes), the boot mode cannot be changed automatically
and the software will initialize the target disk as the source one. To boot up the target machine,
you have to turn on/off the UEFI mode in BIOS manually. Otherwise, the system will not boot
after recovery.
The following table summarizes all cases of recovering disks of a BIOS-based system to UEFI-based
and vice versa.
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