Unallocated Space After Cloning to A Larger HDD

February 19, 2019

It is quite normal to find unallocated space after cloning one hard drive to the other, especially clone from small disk to larger one. This article tells you how to make full use of the unallocated space.

Unallocated space after cloning

“I originally had a 500GB HDD and suddenly my PC kept freezing with the HDD lights staying on. So I immediately thought that the drive was about to fail. I immediately bought a 1TB Samsung SSD and cloned the old HDD to the Samsung using some software. Here is the problem: After cloning and replacing the HDD with Samsung, Windows only sees (in Windows Explorer) and allows me to use 500GB of the Samsung drive. However, if I go to Disk Management, Windows recognizes it as a 1TB drive. I'm not sure why this is and how to fix it. Does anybody know how to deal with this?”

Do you have the same confusion after cloning hard drive to Samsung SSD or to other kinds of hard drive? The most possible corresponding answer would be, you clone the old drive byte for byte. You get the same layout because you cloned exactly the same file system and partition tables. That’s what you ended up with, an exact copy of the original partition. Besides, the unallocated space may exist before and after the cloned partition. Free clone software AOMEI Backupper Standard allows you to edit partitions on the target drive while cloning. Perhaps, you can try this one next time.

Deal with unallocated space after format

You will get unallocated space after formatting one hard drive or partition. You have ways to allocate unused disk space. If you formatted an entire hard disk, quick partition the hard drive would be the best choice for you. If you formatted merely one partition, then create a new partition or allocate unallocated disk space to other partitions will work for you. For more information, see how to deal with external hard drive unallocated space.

How to make use of unallocated space after clone?

Actually, it is pretty easy. However, you have to take different actions in different situations. If you have unallocated space right behind the cloned partition, then use Disk Management. Right click the nearest partition that next to the unallocated space. Select Extend Volume. In the pop-up window, you are able to drag the arrow to the end of the box. Alternative way is to create new simple volume with the unused space. Right click the space, and select New Simple Volume. The rest to do is following the wizard.

If the unallocated space is distributed throughout the hard drive, you need to turn to other professional partition tools. AOMEI Partition Assistant Standard is free partition manager with no bundled adware for Windows 7/8/10. It allows you to merge multiple unallocated spaces into one partition as well as create new partition with the unallocated space. Download it and have a try.

Merge unallocated space into partition after clone

Step1. Install and start AOMEI Partition Assistant Standard. Right click the partition you want to merge to, and select Merge Partitions.

Merge Partitions after Clone

Step2. Check all the unallocated space.

Tick All Unallocated Space

Step3. Click Apply to put the operation into practice.

Apply Merge Partitions after Clone

Don’t be panic when you find your hard drive “lost” a big part of disk space which showing unallocated space after cloning. You cannot find it in Windows Explore, but it does exist. Just find a way to unhidden it and make good use of it. With this freeware AOMEI Partition Assistant Standard, you can shrink C drive, make bootable CD, format/create/delete partition, and create W2G (Windows to go) for Windows 8 and Windows 10, etc.

Since you have solution to deal with unallocated disk space after migrating, you can use AOMEI Partition Assistant Professional to do some preparation before cloning. For instance, allocate free space from D drive to C drive to keep enough room for operating system.