Your computer will then begin formatting, or erasing, all the data currently existing on your C drive. Click on your "C" disk drive when Windows asks which partition you want to "change," or install.Choosing this option will allow you to select the C drive as the only drive you want to format. Select "Drive options (advanced)" when asked where you want Windows installed.Select "Custom" when prompted to indicated the type of installation you want to perform.
In order to proceed to the next screen, you will be required to place a check mark in the box next to "I accept the license terms."
When you have a hard drive with capacity smaller than 2TB, the GPT is unnecessary. The drawback of GPT is that it is not supporting booting through BIOS mode, you are required to have Unified Extensible Firmware Interface (UEFI).
The GPT based disk has some great benefits over MBR disk, for example, it supports up to 128 primary partitions, its data structures are well defined and that helps detect data corruption easier, and also improve the odds of successful data recovery when our hard drives are damaged or have bad sectors. To get command prompt, click on the windows key on your keyboard and in the search bar, search CMD and right click on cmd to open it as Administrator. If you already have a relatively large memory, you can reduce the virtual memory (Page File) that are being used by your system. Remember you should put in mind the storage capacity of the disk you want to format to avoid formatting the wrong disk.
Check out the guide on how to disable Hibernation in Windows 7. GPT (GUID Partition Table) is the standard for partition table on our hard drive. If your system has 8GB of RAM, disabling Hibernation will instantly give you back 8GB of disk space on your OS partition. Yes, the problem is caused by GPT based disk.
This software works great on Windows 7/8/8.1/10, both 32 bit and 64 bit, and is able to recover the mainstream. The selected disk is of the GPT partition style. If your external hard drive keeps asking you to format it after you have tried the above solution, you can download free MiniTool Power Data Recovery which is an excellent program that brings file recovery to Windows to have a try. Windows cannot be installed on this disk.