Normally, you need to wipe the hard drive clean in order to convert your disk to GPT using Disk Management or DiskPart.exe. 2 Different ApproachesĪs mentioned, since UEFI mode requires GPT disk, so when converting Legacy to UEFI, you need to convert MBR disk to GPT disk. If you upgrade to UEFI mode which works with GUID partition table, then you can use disks of enormous size and create as many primary partitions as you want. MBR disks are limited to use 2TB of storage capacity and 4 primary partitions. In Legacy mode, Windows can only boot from master boot record (MBR) disk. If you are using Windows 7 64-bit, Windows 8 or above, you can change Legacy to UEFI mode without data loss if you follow this guide. Windows XP and Windows 7 32bit do not support UEFI. As long as your system and hardware supports UEFI, I think you should. You can convert Legacy to UEFI mode to improve your PC’s performance. Most of the UEFI computers have enabled Legacy boot mode to be compatible with old systems. UEFI is now on its way to replacing outdated BIOS, which is over 40 years old. The Recent hardware uses unified extensible firmware interface (UEFI) instead of traditional BIOS. In this article, I will show you how to do that step by step and you don’t need to reinstall your Windows. If that’s your case, you have come to the right place. You may have heard about the advantages of UEFI over Legacy, but you don’t know how to convert Legacy to UEFI mode.
