ACRONIS BACKUP AND RECOVERY 10 ADVANCED SERVER - UPDATE 3 User Manual page 285

Please note, a volume, belonging to a GPT disk to convert, will be a logical one after the operation and is
irreversible.
3. By clicking OK, you'll add a pending operation of GPT to MBR disk conversion.
(To finish the added operation you will have to commit (p. 293) it. Exiting the program without
committing the pending operations will effectively cancel them.)
6.11.5.5 Disk conversion: basic to dynamic
You would want to convert a basic disk to dynamic in the following cases:

If you plan to use the disk as part of a dynamic disk group.

If you want to achieve additional disk reliability for data storage.
If you need to convert a basic disk to dynamic:
1. Select the basic disk to convert to dynamic.
2. Right-click on the selected volume, and then click Convert to dynamic in the context menu. You
will receive a final warning about the basic disk being converted to dynamic.
3. If you click OK in this warning window, the conversion will be performed immediately and if
necessary, your machine will be restarted.
Please note: A dynamic disk occupies the last megabyte of the physical disk to store the database, including
the four-level description (Volume-Component-Partition-Disk) for each dynamic volume. If during the
conversion to dynamic it turns out that the basic disk is full and the size of its volumes cannot be decreased
automatically, the basic disk to dynamic conversion operation will fail.
Should you decide to revert your dynamic disks back to basic ones, e.g. if you want to start using an
OS on your machine that does not support dynamic disks, you can convert your disks using the same
menu items, though the operation now will be named Convert to basic.
System disk conversion
Acronis Disk Director Lite does not require an operating system reboot after basic to dynamic
conversion of the disk, if:
1. There is a single Windows 2008/Vista operating system installed on the disk.
2. The machine runs this operating system.
Basic to dynamic conversion of the disk, comprising of system volumes, takes a certain amount of time, and any
power loss, unintentional turning off of the machine or accidental pressing of the Reset button during the
procedure could result in bootability loss.
In contrast to Windows Disk Manager the program ensures bootability of an offline operating
system on the disk after the operation.
6.11.5.6 Disk conversion: dynamic to basic
You would want to convert dynamic disks back to basic ones, e.g. if you want to start using an OS on
your machine that does not support dynamic disks.
If you need to convert a dynamic disk to basic:
1. Select the dynamic disk to convert to basic.
2. Right-click on the selected volume, and then click Convert to basic in the context menu. You will
receive a final warning about the dynamic disk being converted to basic.
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