UEFI BIOS

[RussD]

Hi All---I'm a bit Bemused so need some answers Please. I only noticed this the other day.
When I updated my Win 7 to Win 10 over a year or more ago, I never noticed that my SSD was in GPR instead of GPT.

Now what I find Strange is this, My BIOS says UEFI + Legasy in its window. Before the update to 10 I was in UEFI mode, so how did my Bios and SSD choose Legasy?? I did change the SSD from a 240gb to a new 500gb so I guessing that Windows formated it to GPR which made it Legasy instead of GPT.

Can I change it from GPR to GPT without messing up my OS. ?? Or would I be better off buying another 500gb SSD Format it to GPT and clone the old 500gb to it. Then Format the old to GPT then clone the new ssd back to it. THANKS

 

[RussD]

Hi mrk---Sorry, yes I meant to say MBR. I not got a clue to what CSM is. Not seen it in my BIOS.
I looked in my BIOS and it says UEFI & LEGACY in the Box...Once I have followed the advice in the link above will there be a box for just UEFI or UEFI & Legasy. I Remember with Windows 7 it said UEFI *& LEGASY and booted with UEFI because my 1TB hd was a GPT. Did the same when I first installed Win10 on my First ssd of 148gB. When I updated to a 500GB I forgot to choose GPT. I Hope it does not Mess up my OS & programs. Last time I tried something like this I could NOT boot up to my OS and had to take out the Battery to Reset everything..So Before giving it a go I need to know what CSM is Please...One last thing--I also have 4 HDD in my Desktop. 3 are MBR and one is GPT. Will they still show up and open after I have put my 500GB SSD in GPT. THANKS.

 

[RussD]

Many Thanks. You been Very Helpful on this...That Link is Great..