If you are trying to install Windows 7 or the previous version on your computer, which was shipped from the factory with Microsoft windows 8, Windows 8.1 or Windows 10 operating system. Your computer will show the error message “Windows cannot be installed to the disk. The selected disk is of the GPT partition style”.
Yes, currently you are using GUID Partition Table (GPT), the newer versions of Microsoft Windows operating systems are using this GPT because of it’s greater partition flexibility. GPT is much more robust than MBR. From Windows 8 operating system onwards, Microsoft has started replacing MBR by GPT. So if your computer is shipped from the factory with such operating systems, the boot record will be in GPT. If you try to install Windows 7 or any other previous operating systems on the partition, you will get the same error message mentioned above. In such cases, you need to degrade the boot sector from GPT to MBR.
Is it possible to degrade from GPT to MBR?
Obviously…. You can change your boot record from GPT to MBR by following some simple commands. Before converting the boot record, you need to take a backup of all important files from the partitions because, once you have converted the boot record, the whole partitions on the hard disk will be removed and a new partition will be created. If you forget to take the backup of your important file before converting the boot record, the data will be wiped out from the computer and you will need to use a quality partition recovery software to recover deleted partition.
Steps to change GPT to MBR using commands
Please press Shift button and F10 key when the installing window appears on the computer to open the command prompt. Now follow the steps given below:-
Step 1: Type the command DISKPART and then press on the Enter Key.
Step 2: In the diskpart prompt, please enter LIST DISK and click on the Enter button to proceed.
Step 3: If your computer has only one HDD, it will show disk 0 only. It is the hard drive, which you need to work on. Please type SELECT DISK (disk no.), [eg: – SELECT DISK 0] and hit the enter button.
Step 4: Type CLEAN and press enter button, it will remove the whole partitions from the selected hard drive.
Step 5: Next step is to convert the GPT to MBR, for converting please type the command CONVERT MBR in the disk part prompt and hit the Enter key.
Step 6: Now you can see a message showing successful converting of GPT to MBR, now please type EXIT on the disk part prompt and press the enter key to exit.
Now close the command prompt window and proceed the installation process. You will not see the same error anymore because now your boot recorder is MBR, it will support Windows 7 and earlier versions of Microsoft Windows operating system. If you want to install the Windows 8, Windows 8.1 or Windows 10 operating system, again you need to convert into GPT boot record.