For some reasons, you would need to install or re-install Windows on your machine, probably when you want to do a clean install or when your PC has a crash on startup.
I had an issue in booting with my Windows 8 PC, and as all repair tools provided by them did not work, I had to do a clean install. However, another issue appeared when I proceed the installation.
As normal, I boot up with Windows 8 Installation USB and follow steps to install Windows. Then, the error showed up when I chose partition to install the Windows:
Windows cannot be installed on this disk. The selected disk is of the GPT partition style.
Yes, the problem is caused by GPT based disk. GPT (GUID Partition Table) is the standard for partition table on our hard drive. 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. The drawback of GPT is that it is not supporting booting through BIOS mode, you are required to have Unified Extensible Firmware Interface (UEFI).
When you have a hard drive with capacity smaller than 2TB, the GPT is unnecessary. Therefore, you can remove the GPT protective partition and continue installing Windows. Here are the simple steps:
1. Go to Command Prompt. You can also find it in the Windows 8 Installation Disk/USB, navigate to Repair Your Computer -> Advanced Options -> Command Prompt.
2. Type in diskpart in the command line.
3. Type in list disk to see all your disks and which one is GPT styled. The GPT based disk is marked with asterisk icon in the last column Gpt.
4. Choose the disk you want to delete GPT by typing select disk n (remember to change n to your disk number).
5. After the disk is selected, you can clean the disk by typing in clean.
Now you can check again and see that your disk is not GPT anymore. Just go ahead and install Windows 8, let me know if you have any problem in the process.
Mohammad Agha Rahimi says
thanks a lot for your help i had a problem for 10 days with the GPT partition style with above information i solved the problem
From Afghanistan
Johnny ng says
Thanks so much, gpt partition style gave me a lot of headache. My problem is solved now.
deepak says
sir I do this, but disk is not change from gpt to mbr
tet says
you supposed to mentioned that when we do disk it will wipe all partition and data will be lost, it happened to me :(
thanks anyway..
crazy G says
THX finally i can do clean install with usb instead cd
Mohd Asif says
You can’t convert a disk from GPT to MBR if windows is installed on that disk…..
How to do that….?
Plz help
manju says
Thank you
Imran says
Thanks Dude
Ali ahmadi says
Thank you so much, my grandmaster
Iteleti Medical says
There are a lot of programs out there advising users you need this or that program with a partition manager. However, through Tuan Do at TECHWALLS one will become educated quite quickly on how to remove GPT partition so you can do a fresh install. It’s so easy, anybody can do it! Thank you
johan says
I have win 10 installed and would like to downgrade to 8,1. will this delete windows on the drive?
Unwana bright says
It worked but all other partition were deleted
AR says
Hi. Thanks for your guidance. It was practically helpful.
Sunny says
What if i have formatted my primary memory which is gpt protected and want to install windows on it?
michael buro says
Scoured the internet for a solution yours was the only one that worked. You have no idea how many times I partitioned and re-partitioned my MAC machine in order to use Win 10. Bootcamp was useless in this instance. I would like to add a couple more items.
I did not use the USB created install from the ISO image, I started up from my install DVD
After step 5 repeat step 3 just to make sure. I then tried to install windows 10 got another error message which I solved by using the format command. Re-booted and the install was flawless.