Can old laptops support UEFI boot?

I have an old laptop (Toshiba A355-S6925) that was new in 2008. It originally came with Vista 64, but is currently running the latest released version of 64-bit Windows 10. Booting is now legacy on MBR, but I would like to switch to UEFI on GPT if the BIOS will support it. Unfortunately, there is no legacy mention in the BIOS or any way showing to specify UEFI boot. Any ideas if UEFI could be made to work properly on this old machine? I could make a fresh Macrium backup and then blindly try, but I'd rather have some positive input before I tackle it.

UEFI (Unified Extensible Firmware Interface) refers to the type of firmware that your system employs. If the system uses UEFI then you configure it to use GPT. BIOS based systems will always employ MBR.

So the bottom line is that if your system is BIOS based (and from your description it certainly sounds like this is the case) then MBR is the way to go for you.

Note that UEFI is not something that you simply elect to use in Windows. As noted, support for UEFI is determined by whether your system is a UEFI or a BIOS based firmware.

A computer is either BIOS or UEFI. If it´s UEFI, it can usually be operated in legacy mode, backwards compatible with BIOS. In your case, it appears to be a BIOS machine, so it´s not possible to "switch to UEFI".

@larc919, what did you hope to gain by booting in UEFI v. legacy BIOS?

hsehestedt said:

So the bottom line is that if your system is BIOS based (and from your description it certainly sounds like this is the case) then MBR is the way to go for you.

Anibor said:

A computer is either BIOS or UEFI. If it´s UEFI, it can usually be operated in legacy mode, backwards compatible with BIOS. In your case, it appears to be a BIOS machine, so it´s not possible to "switch to UEFI".

Thanks, hsehestedt and Anibor. I was thinking something like that could be the situation. That was the reason I asked the question before I tried... and failed!

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NavyLCDR said:

@larc919, what did you hope to gain by booting in UEFI v. legacy BIOS?

Maybe a bit faster boot. Certainly consistency with all my other systems.