Cannot extend the C drive? Reasons why you couldn't increase it despite having unallocated space

When using a Windows PC, you may find that the capacity of your C drive has decreased before you know it.I also install ...
Windows Report on MSN

Unable to extend volume in Hyper-V? 6 fixes that work

Unable to extend volume in Hyper-V? Fix grayed-out Extend Volume, VHDX sizing, checkpoints, partition layout, and disk issues ...

Insufficient C Drive Space | How to Merge Unallocated Space

"My C drive is running out of space, but when I look at Disk Management, I see an 'Unallocated' area. Why can't I use ...
Ars Technica

How can I extend my boot partition to take up the rest of my unallocated space?

I just installed a new Hitachi 7K200 drive into my laptop. The drive cloning software that Hitachi provided did a nice job of cloning the partitions from my previous drive, but I've got a problem. The ...