A couple of years ago I bought an ASUS computer that was prebuilt and had Windows 8 built-in. When I booted up my computer I noticed my C drive (where my OS and all other essentials are) only had 149GB of free space, while my D drive had up to 764GB of free space. Without thinking, I formatted my D drive to convert it into unallocated space on Windows Disk Management, but I later realized there were setup files on there. When I attempted to extend my C drive space in the Windows Disk Management program, the extend option was grayed out and I had no ability to add the 764GB of space to my C drive.
It’s been about 3 years now, and space on my C drive is running out. I’d like to know how to extend my space in my C drive without having to erase data, use 3rd party software, or have to buy a whole new hard drive. I’m not sure if the problem is linked to the hard drive itself, or if it’s something to do with my motherboard or BIOS.
