Recovering BIOS-based systems to UEFI-based and vice versa

Acronis Backup & Recovery 11.5 supports transferring 64-bit Windows operating systems between BIOS-based hardware and hardware that supports Unified Extensible Firmware Interface (UEFI).

How it works

Depending on whether the machine uses BIOS or UEFI firmware for booting, the disk with the system volume must have a specific partitioning scheme. The partitioning scheme is master boot record (MBR) for BIOS, and GUID partition table (GPT) for UEFI.

In addition, the operating system itself is sensitive to the type of firmware.

When performing a recovery to a machine that has a type of firmware that is different from the firmware of the original machine, Acronis Backup & Recovery 11.5:

For details, including the list of Windows operating systems that can be adjusted this way, see “Recovering volumes” and “Recovering disks” in this section.

Recommendations

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:

When transferring a system between UEFI and BIOS is not supported, Acronis Backup & Recovery 11.5 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.

In this section

Recovering volumes

Recovering disks