

Thus, in most cases, you probably don’t want to convert boot disks. Newer versions of Windows x64 only start from GPT disks on UEFI systems in all other configurations, MBR is required. However, if Windows is supposed to boot up from the disk, you are restricted to a particular partition scheme. The conversion tool will attempt to remap all drive letter assignment information.EaseUS Partition Manager is your best choice to convert MBR to GPT without losing data.
...

