These are the methods that use utilities available within Windows 10 that anyone can use. If you want to convert the system disk, you may use the next method which is using the mbr2gpt tool. One more thing to note here is that the graphical tool will not be able to convert the system disk (where Windows is installed) to GPT or MBR. Please note that if your disk is already GPT, you will get an option to convert GPT to MBR. Select the disk you want to convert and then go to Actions menu –> All tasks –> Convert to GPT.
This will open the Disk Management console.
Open the Run dialog (Windows key + R) and type diskmgmt.msc. Simply follow the steps given below to convert an MBR disk to GPT. It is highly recommended that users back up their data before performing any of the following operations to be on the safer side.Īs it allows viewing and management of disk drives on a PC, it can also be used to convert MBR to GPT without data loss. There are three basic methods for converting MBR to GPT disk while preventing data loss. Windows Server 2008, 2012, 2016, 2019 Security Easy to configure with no security features More secure Data safety More prone to errors because the boot records are stored on the same partition Less prone to errors and data recovery is possible as CRC information is stored in a separate partition. Features MBR GPT Maximum storage capacity 2TB (upto 4TB for NTFS) No disk capacity limitation Boot mode BIOS UEFI Compatibility All Windows and Windows Server versions from Windows NT to Windows 10 and Windows Server 2019 Windows 7, 8, 8.1, 10 Here is a quick reference of which partition format is better for you. 
Convert MBR to GPT Using Disk Management. Convert MBR to GPT using Diskpart utility.
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