Re: Is it possible to dual-boot both MBR & GPT without changing BIOS settings on laptop

Theo <[email protected]>
Newsgroups alt.os.linux,uk.comp.os.linux,alt.comp.microsoft.windows,alt.comp.os.windows-11
Organization University of Cambridge, England
Message-ID <eon*[email protected]> 
In uk.comp.os.linux Java Jive <[email protected]> wrote:
> As per subject, as I now have on the same PC some OSs  -  Ubuntu24, 
> Windows7/10  -  installed on an MBR disk and Windows 11 installed on a 
> GPT/UEFI disk, I'd like if possible to find a way of booting any of 
> them, and MBR/GPT USB sticks, without constantly having to change the 
> BIOS settings on the PC.

I think that should work without changing settings, although I haven't tried
it.

You need to ensure CSM is turned on, that's support for legacy BIOS boot.
Then select which disc to boot from at boot time and it'll use UEFI if
available and BIOS if not.  You probably want Secure Boot turned off as that
only works in UEFI mode.

Theo
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