How to Change Legacy to UEFI｜Without Reinstalling Windows
The Legacy requires that Windows boots from an MBR disk and UEFI requires a GPT boot disk, so it is necessary to convert MBR to GPT when switching the firmware setting from Legacy to UEFI.
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✅ 【Change Legacy to UEFI】
⏰ 0:00 Start
⏰ 0:20 UEFI's Advantages
⏰ 1:40 Via CMD
⏰ 2:16 Via AOMEI Partition Assistnat
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✅ 【Detail】
⏰ 0:20 UEFI's Advantages
UEFI is better than Legacy BIOS with the following advantages:
1. Legacy BIOS uses the MBR disk while UEFI uses the GPT hard drive. The major difference between those two partition styles is that MBR can only support up to 2TB.
2. UEFI can enhance the boot time and elevate the computer speed, which will make a big difference when you install a large hard drive on your device.
3. Compared with BIOS, the UEFI comes with the Secure Boot feature. It can make the boot process much more securer.
So it's better to change legacy to UEFI.
⏰ 1:40 Via CMD
If you are sure to convert Legacy to UEFI, detailed steps are listed as follows:
1. After changing the Legacy to UEFI in your firmware, you can boot your computer from a Windows installation disk.
2. At the Windows Setup screen, press Shift + F10 to open a command prompt.
3. Type “diskpart” and use the command “list disk - select disk - clean - convert gpt”.
4. Now, you can go back and reinstall Windows. If you try to install Windows without these steps, you will get the error “Windows cannot be installed to this disk” after you change BIOS to UEFI mode.
⏰ 2:16 Via AOMEI Partition Assistnat
In fact here is the way that can let you convert MBR to GPT without deleting data and switch Legacy to UEFI without reinstalling Windows. The professional and safe tools - AOMEI Partition Assistant Professional allows you to complete the task. This way, you don’t need to spend time reinstalling Windows and all of your programs for enabling UEFI boot mode.
You can download the free trial of AOMEI Partition Assistant in the description area and upgrade to the Pro version to enjoy this feature.
1. Run AOMEI Partition Assistant Pro.
2. Right-click on the system disk and select Convert to GPT Disk.
3. Click "Yes" to confirm your operation.
4. Click “Apply” to apply the change.
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How to Change Legacy to UEFI｜Without Reinstalling Windows
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