Bedienungsanleitung Acronis Backup PC 11.7 (Seite 116 von 248) (Englisch)

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Limitations

Transferring a Linux system between UEFI and BIOS is not supported.

Transferring a Windows system between UEFI and BIOS is not supported if a backup is stored in any

of these locations:

 Acronis Cloud Storage

 Optical discs (CDs, DVDs, or Blu-ray discs)

When transferring a system between UEFI and BIOS is not supported, Acronis Backup initializes the

target disk with the same partitioning scheme as the original disk. No adjustment of the operating

system is performed. If the target machine supports both UEFI and BIOS, you need to enable the

boot mode corresponding to the original machine. Otherwise, the system will not boot.

5.3.1 Recovering volumes

Let's assume you backed up the system and boot volumes (or the entire machine) and want to

recover these volumes to a different platform. The ability of the recovered system to boot up

depends on the following factors:

 Source operating system: is the OS convertible or non-convertible? Convertible operating

systems allow changing the boot mode from BIOS to UEFI and back.

 64-bit versions of all Windows operating systems starting with Windows Vista x64 SP1 are

convertible.

 64-bit versions of all Windows Server operating systems starting with Windows Server 2008

x64 SP1 are convertible.

All other operating systems are non-convertible.

 Source and target disk partition style: MBR or GPT. System and boot volumes of BIOS platforms

use MBR disks. System and boot volumes of UEFI platforms use GPT disks.

When selecting not initialized target disk for recovery, this disk will be automatically initialized

either to GPT or to MBR depending on the original disk partitioning style, the current boot mode

(UEFI or BIOS) and the type of operating systems (convertible or non-convertible) that are

located on this volume.

If the initialization may result in bootability loss, the software takes the partitioning style from

the source volume ignoring the target disk size. In such cases, the software can select the MBR

partitioning style for disks whose size is more than 2 TB; however, the disk space beyond 2 TB

will not be available for use.

If required, you can initialize the target disk manually by using the Disk management (p. 179)

functionality.

The following table summarizes whether it is possible to retain the system bootability when

recovering boot and system volumes of a BIOS-based system to UEFI-based and back.

 A green background means that the system will be bootable. No user action is required.

 A yellow background means that you need to perform additional steps to make the system

bootable. These steps are not possible on some machines.

 A red background means that the system will not be able to boot due to BIOS and UEFI platform

limitations.

Original

Target hardware

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