Computer

Is changing UEFI to legacy safe?


No – in fact, there have been BIOS issues on MANY laptops that require a change from UEFI Secure Boot to Legacy, no secure boot and back again. No data was lost.

Is it better to boot UEFI or legacy?

In general, install Windows using the newer UEFI mode, as it includes more security features than the legacy BIOS mode. If you’re booting from a network that only supports BIOS, you’ll need to boot to legacy BIOS mode. After Windows is installed, the device boots automatically using the same mode it was installed with.

Is it safe to switch to legacy boot?

It won’t cause any damage. Legacy mode (a.k.a. BIOS mode, CSM boot) matters only when the operating system boots. Once it boots, it doesn’t matter anymore.

Will I lose data if I change legacy mode to UEFI?

You won’t lose data per se, but you won’t be able to boot you UEFI partition until you switch back to UEFI.

Is UEFI legacy good?

Compared with Legacy, UEFI has better programmability, greater scalability, higher performance, and higher security. In recent years, UEFI has become an increasingly common boot mode. Microsoft has also made it clear that Windows 11 needs to boot from UEFI.

To Top