Operation Manual

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Original

system

Target hardware

BIOS

UEFI

OS: non-

convertible

The target disk will be initialized as the

source one (GPT).

The target machine must support UEFI.

Additional steps

1. Turn on the UEFI mode in BIOS.

2. Boot from a bootable media, and

perform the recovery.

Recovery to large disks in BIOS

After a recovery to a BIOS-based system, the target system disk is initialized as MBR. Because of disk

size limitations in BIOS, if the disk is larger than 2 TB, only the first 2 TB of disk space will be available

for use. If the machine supports UEFI, you can overcome this limitation by turning on the UEFI mode

and then performing the recovery. The disk is initialized as GPT. The 2-TB limitation for GPT disks

does not exist.

5.4 Acronis Active Restore

Active Restore is the Acronis proprietary technology that brings a system or a database online

immediately after its recovery is started.

This section describes the use of Active Restore during an operating system recovery. While based on

the same technology, recovery of Microsoft Exchange databases or Microsoft SQL databases

proceeds in a different way. For more information, refer to following sections:

 When recovering Microsoft Exchange databases, see the "Using Acronis Active Restore for

database recovery" section of the "Backing up Microsoft Exchange Server data" document.

 When recovering Microsoft SQL databases, see "Using Acronis Active Restore for SQL database

recovery" (p. 316).

Limitations

 Active Restore is meant for instant data recovery on the same machine. It is not available when

recovering to dissimilar hardware.

 The only supported archive location is a local drive, or more precisely, any device available

through the machine’s BIOS. This may be Acronis Secure Zone, a USB hard drive, a flash drive or

any internal hard drive.

 Active Restore does not support disks with the GPT partitioning style as a source being recovered,

as a recovery destination, or as an archive location. This also means that Unified Extensible

Firmware Interface (UEFI) is not supported. The only supported boot mode is BIOS.

How it works

When configuring a recovery operation, you select disks or volumes to recover from a backup.

Acronis Backup scans the selected disks or volumes in the backup. If this scan finds a supported

operating system, use of Acronis Active Restore becomes available.

If you do not enable Active Restore, the system recovery will proceed in the usual way and the

machine will become operational after the recovery is completed.