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

    From Java Jive@java@evij.com.invalid to alt.os.linux,uk.comp.os.linux,alt.comp.microsoft.windows,alt.comp.os.windows-11 on Tue Dec 16 17:04:58 2025
    From Newsgroup: alt.comp.os.windows-11

    On 2025-11-11 00:27, Java Jive wrote:

    However, as it has turned out, I've only been able to achieve partial backward compatibility in that all the 64-bit OSs can now be booted from
    D3, but not the 32-bit OS, I've not been able to find a way of booting
    Win 7 Pro 32-Bit from UEFI.-a Further, I have not been able to find a way
    of booting *ANY* 32-Bit OS, not even a UEFI boot Win 8 Pro 32-Bit installation USB, when using UEFI on that particular PC (so probably
    none of the others either, because they're all identical or nearly so),
    so I suspect that this is a firmware limitation with this range of PCs.

    Had another look at this today, and, as I suspected, it is indeed a
    firmware limitation of these Dell Precision M6700/M6800 laptops:

    https://www.google.com/search?q=boot+via+UEFI+32-bit+windows+on+Dell+Precision+M6700

    "AI Overview

    Booting a 32-bit version of Windows in UEFI mode on a Dell Precision
    M6700 is not typically possible, because the system's UEFI firmware is
    64-bit and does not support native 32-bit UEFI booting. Most modern
    systems, including the M6700, use a 64-bit UEFI, which requires a 64-bit operating system to boot in UEFI mode."
    --

    Fake news kills!

    I may be contacted via the contact address given on my website: www.macfh.co.uk

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Carlos E.R.@robin_listas@es.invalid to alt.os.linux,uk.comp.os.linux,alt.comp.microsoft.windows,alt.comp.os.windows-11 on Tue Dec 16 21:27:31 2025
    From Newsgroup: alt.comp.os.windows-11

    On 2025-12-16 18:04, Java Jive wrote:
    On 2025-11-11 00:27, Java Jive wrote:

    However, as it has turned out, I've only been able to achieve partial
    backward compatibility in that all the 64-bit OSs can now be booted
    from D3, but not the 32-bit OS, I've not been able to find a way of
    booting Win 7 Pro 32-Bit from UEFI.-a Further, I have not been able to
    find a way of booting *ANY* 32-Bit OS, not even a UEFI boot Win 8 Pro
    32-Bit installation USB, when using UEFI on that particular PC (so
    probably none of the others either, because they're all identical or
    nearly so), so I suspect that this is a firmware limitation with this
    range of PCs.

    Had another look at this today, and, as I suspected, it is indeed a
    firmware limitation of these Dell Precision M6700/M6800 laptops:

    https://www.google.com/search?q=boot+via+UEFI+32- bit+windows+on+Dell+Precision+M6700

    "AI Overview

    Booting a 32-bit version of Windows in UEFI mode on a Dell Precision
    M6700 is not typically possible, because the system's UEFI firmware is 64-bit and does not support native 32-bit UEFI booting.-a Most modern systems, including the M6700, use a 64-bit UEFI, which requires a 64-bit operating system to boot in UEFI mode."


    Ah.
    --
    Cheers, Carlos.
    ESEfc-Efc+, EUEfc-Efc|;
    --- Synchronet 3.21a-Linux NewsLink 1.2