Extend C Drive with Unallocated Space (Adjacent & Non-Adjacent) | Disk Management, Partition Resizer
Running out of space on your C drive? This video walks you through extending your system partition using unallocated space in every possible layout:
✔ Unallocated space next to C drive (easy method)
✔ Unallocated space not adjacent (requires extra steps, like moving D, EFI, or Healthy Recovery)
✔ Unallocated space on the left side of C drive
✔ Using Disk Management vs Partition Resizer
(How to get unallocated space? -- Shrink a partition by using the 'Resize' option in Partition Resizer, or use 'Shrink Volume' using Disk Management)
(If you have a different partition map and do not know how to use the software, feel free to send us your disk management screenshot and tell us what you want to do with it. Leave your case in the comment or drop an email to us.)
Follow along to understand the limitations of built-in tools and how to overcome them with the right approach.
⏱️ Time Codes
00:00 – Introduction
00:17 – Case 1: Unallocated Space Adjacent to C Drive (Right Side), extend C with Disk Management
00:38 – Case 2: Unallocated Space Not Adjacent to C Drive (D, or EFI or Recovery blocks): Move partition and extend C with Partition Resizer
00:55 – How to move a partition like D, EFI, or Recovery to change the location of the unallocated space
02:06 – Case 3: Unallocated Space Left to C Drive
02:48 – Summary
Disk Management or Diskpart can extend the C drive with unallocated space only when it's right contiguous, NTFS, on a basic disk, not over 2TB with an MBR disk, a primary partition, etc.
If not, use Partition Resizer to extend the C drive when there is unallocated space.
(Same disk if not RAID, 2TB limit for MBR disk is the same common limitation for both Disk Management and Partition Resizer)
Tools used (IM-Magic Partition Resizer)
100% Free on Windows 11-XP, download: https://www.resize-c.com
Free demo on Windows Server, download: https://www.resize-c.com/server/
What can Partition Resizer do?
Resize, move, delete, convert, format, clone, backup, migrate os and more.
How to move a partition or move unallocated space?
Open Partition Resizer, right-click the partition that is adjacent to the unallocated space, and choose 'Resize/Move Partition', move the partition when the cursor shows cross arrows, and then the location of the unallocated space will be changed accordingly.
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