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Extend C Drive in Windows Server 2000, 2003, 2008 and Windows 7, Vista, XP

Case Study: My C drive is running low space in my Windows 2003 Server. The hard drive has 55GB free. I tried to use Diskpart extend command to extend C drive from 12GB to 30GB, but I got an error that Diskpart failed to extend the volume. Is there a way to extend C drive?

C drive is the common target because it is the default partition where certain files are expected to be found by the operating system while booting the system. When C drive is running out of space, the computer will not work efficiently and stably. Besides, defragment, Windows updates and more installations of applications are not available. To optimize computer performance and maximize disk space usage, it is necessary to extend C drive.

Why Diskpart failed to extend C drive?

As mentioned above, C drive is usually a system and/or boot partition. When using Diskpart extend command, system or boot volumes may be blocked from being extended. You cannot either extend the partition with Diskpart if the system page file is located on the partition.

Can I extend C drive with Disk Management snap-in or Partition Magic?

In Windows 8 and 8.1, Windows 7, Vista and 2008 Server, there are "Extend Volume" and "Shrink Volume" functions in Disk Management. However, you can only extend C drive into contiguous unallocated space the right side of C drive. If it is non-contiguous unallocated space, right click C drive and extend volume greyed out as shown below. In this case you only need to merge unallocated space to C drive.

Norton Partition Magic is the most popular hard drive partition software. But it only works with Windows 98/2000/XP. What’s worse, due to changing consumer usage trends and Symantec’s desire to offer the highest quality and most innovative solutions for the latest operating systems, Symantec has discontinued Norton Partition Magic 8.0.

Extend C drive with the latest Partition Magic Software

As Partition Magic alternative, Partition Assistant is an ALL-IN-ONE partition manager software and disk management toolkit. The built-in "Resize Partition" feature allows you to shrink, move, extend partition in Windows 7, Vista, XP and Windows Server 2000, 2003, 2008 both 32-bit and 64-bit without losing data.

The following step-by-step procedure guides you through the process to extend C drive by taking free space from D partition:

Step1: Choose the right edition. For server Windows OS, install and launch Partition Magic Server alternative - Partition Assistant Server Edition.

Partition Assistant Server

Step2: Select D partition. Position the mouse pointer on the left side and drag the slider bar rightwards to shrink D partition.

Shrink Partition

Step3: There will be contiguous unallocated space on the right side of C drive. Then, select C drive and drag the right slider bar rightwards to extend C drive into unallocated space.

Extend C drive

Step4: Now you can preview the extended C drive. To save all changes, click "Apply" on the toolbar.

Click Apply

With several drags and clicks, you can extend C drive easily and safely. Other than resizing partition feature, Partition Magic Software - Partition Assistant brings together the most popular hard disk partition management with powerful data protection including: merge two partitions into a bigger one, allocate free space from one partition to another, extend NTFS system partition without rebooting, split partition into two or more, sector by sector clone hard drive to upgrade disk without reinstalling Windows and applications, clone partition to another disk for migrating system volume and backup important data, create partition, convert primary to logical partition and vice versa, convert FAT partition to NTFS, etc. Now free download partition magic demo version and try before you buy full version.

Tips: For Enterprise users, Unlimited Edition allows unlimited usage within one company to save time and money, in other words, you can install it on unlimited servers and PCs in your company to maximize business productivity whilst minimizing the total cost of management.

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