⛸️ Unallocated Space Windows 10 Cannot Use

Windows 11/10 inbuilt Disk Management is able to create unallocated space and you can achieve this in two different ways - either shrink a partition or delete a partition. Option 1. Shrink Partition 1. Right-click the partition you want to shrink and click "Shrink Volume". 2. Type the number of sizes you want to get as unallocated space. 3.
If you do that, then reboot into Windows after completing the ext4 expansion. Click the Windows start key and type Recovery Drive. Under Settings, click Create a recovery drive. Your computer may ask you whether you would like to open Recovery Media Creator. Click Yes, and tell it to use that new drive letter for Recovery purposes. Press on Windows key + R your keyboard and type in diskmgmt.msc. This will launch Disk Management. Back up the partition to be deleted to an external drive. Right-click on the said partition beside Drive C. (This is usually Drive D) and select Delete Volume. Confirm to apply all the changes. After the Drive C is unallocated, right-click on the Answer. Go into UEFI/BIOS Setup and disable the secondary hard drive under Storage. Boot the media as a UEFI device as shown in my previous post, choose Custom Install, delete all partitions off the first drive to prepare it for the cleanest possible install. Then delete the EFI System partition (located by label) off the second drive. .