RE: Request for help - Debian UEFI not possible after starting windows
> -----Original Message-----
> From: Steve McIntyre <steve@einval.com>
> Sent: Monday, April 6, 2020 7:44 PM
> To: Robert Gomułka
> Cc: debian-efi@lists.debian.org
> Subject: Re: Request for help - Debian UEFI not possible after starting
> windows
>
>
> [EXTERNAL EMAIL]
>
> Hi Robert,
>
> On Sat, Apr 04, 2020 at 08:42:42PM +0200, Robert Gomułka wrote:
> >
> >Do you have any idea of how to debug/fix it? Even if Windows somehow
> >messes my bios settings, I still can boot from Debian Live in UEFI
> >mode. But can't do the same for my Debian pendrive. Is there something
> >I can do to make my pendrive appear the same way as Debian Live?
> >Fixing it each time is inconvenient...
>
> Your tale makes it sound very like something in the Wondows boot chain is
> cleaning up boot entries that it doesn't like, including (maybe?) anything
> on an external drive.
I don't believe Windows does this by default. However with all the mentions of
a locked down image I would however suspect a 3rd party security solution that was
installed might be doing it.
>
> >A friend of mine uses very similar setup, but with Ubuntu - in his case
> >menu entry doesn't disappear after booting to Windows.
>
> By default it looks like Ubuntu installs a copy of Grub to the removable
> media path, (the location Mario described). We *don't* do that by default
> in Debian, but the system can be configured to do it to work around
> firmware implementations that are broken like this. The best way to do that
> is, from your running Debian system:
>
> $ sudo dpkg-reconfigure -plow grub-efi-amd64
>
> and run through the configuration options there. When it asks "Force extra
> installation to the EFI removable media path?" say *yes*. That will likely
> fix your issue.
>
> --
> Steve McIntyre, Cambridge, UK.
> steve@einval.com
> "... the premise [is] that privacy is about hiding a wrong. It's not.
> Privacy is an inherent human right, and a requirement for maintaining the
> human condition with dignity and respect."
> -- Bruce Schneier
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