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Re: Chainloading an MS Windows installer DVD


From: Randy Goldenberg
Subject: Re: Chainloading an MS Windows installer DVD
Date: Thu, 19 Oct 2023 08:55:17 -0700

According to the link you provided, the ISO file can be used to
create installation media using a USB flash drive or DVD.  In the "subject"
field of your email you refer to "MS Windows installer DVD", but in the
body of your message you refer to "MS Windows Installer (on USB)".

Please clarify what your boot media is, and describe how you created it.

On Thu, Oct 19, 2023 at 2:36 AM Philip Couling <couling@gmail.com> wrote:

> Hi
>
> Is there any reason why I can't chainload an MS Windows Installer (on
> USB)?  Currently when I try this I get "UnknownError" when I type "boot" at
> the grub command line.
>
> The MS Windows ISOs are a bit weird: found here:
> https://www.microsoft.com/en-gb/software-download/windows10ISO
>
> They are not partitioned and have a UDF filesystem instead of ISO 9660 or
> FAT32. So my hardware cannot directly boot this.  But I was assuming that
> all I would need to do would be ask grub to chainload the ISO as it has a
> UDF driver.
>
> I can read the Windows Boot media after I "insmod udf" and then
> "chainloader /efi/boot/bootx64.efi" which results in the output
> "/EndEntire".  But when I then type "boot" I get "UnknownError".
>
> Has anyone experienced this? Any ideas about what isn't working? I freely
> admit it could be a Microsoft weirdness that requires their input, I just
> wanted to exhaust options here first.
>
> Thanks
>


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