With the help of Disk Management, you can extend and reduce the disk size, create and
delete volumes (partitions), change partition drive letter.
Access to Disk Management in Windows 7: Start-Type “diskmgmt.msc”-press enter
OR: Start-Control Panel-System and Security-Administrative Tools-Computer
Management-Disk Management ; OR: Computer (Right Click)-Manage-Storage-Disk
Management.
Although Windows 7 Disk Management has improved much compared to the previous version
build in Windows XP as a Windows disk partition tool, it still has some limitations
on disk management. Other than the basic functions provided before, Windows 7 disk
partition tool can do resize partition, but if you are to ask more functions in it,
its not a good one to go after.

When we run diskmgmt.msc, we actually want to add unallocated space into target
partition, usually system partition, but the Extend Volume option is grayed out when
we right click the partition. Why is extend volume option grayed out? You can see
that there is another partition between the target partition (Eg, C drive) and
unallocated space. Disk Management requires the unallocated space must go right
after the partition you want to extend. Besides, you can’t find where to Move
partition in the right-click menu.
You must have faced the following error messages when create partition:
A: You cannot create a new volume in this unallocated space because the disk already
contains the maximum number of partitions
B: The operation you selected will convert the selected basic disk(s) to dynamic
disk(s). If you convert the disk(s) to dynamic, you will not be able to start
installed operating systems from any volume on the disk(s) (except the current boot
volume). Are you sure you want to continue?
When you come up with these two error messages, its because Windows allows four
primary partitions at most on a MBR disk. So if you want to go success, you have to
delete one or more primary partitions, but it that what you mean to?
The two limitations we mentioned above can’t not be found in AOMEI Partition
Assistant, which is a third party Windows disk partition tool. You can resize
partition or do partition management by few clicks without worrying any limitation
that may occur in Disk Management.
Tips: As Partition
Magic alternative, AOMEI Partition Assistant has various basic and advanced disk
partition utilities apart from disk and partition copy feature. With Partition
Assistant, you can create partition, delete partition,format
partition, resize/move partition, extend
system partition, shrink volume, split
partition,merge partitions, wipe
hard drive and partition, convert file system, hide/unhide
partitions, set active partition, etc. All the
operations can be completed without data loss. Free download and check how powerful
it is!

