You would want to convert a basic disk to dynamic in the following cases:
If you need to convert a basic disk to dynamic:
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:
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.