windows/ubuntu dual boot

[Robert Heller]

This (of course) is only possible if you can get into Linux...

I'd suggest booting a live CD from USB or CD/DVD (depending on the age of the 
machine), find the Linux install, which can be mounted and chroot'ed to, then 
you can fix grub's settings and update grub.cfg (or grub.conf if old).

It is *possible* that a MS-Windows update cleared off grub, so it will need to 
be re-installed.

At Tue, 20 Aug 2024 20:37:18 +0100 "Ubuntu user technical support,? not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:

> 
> Tuesday, August 20, 2024  at 15:17, bruce wrote:
> windows/ubuntu dual boot (at least in part)
> 
> >hi.
> 
> >Got an old windows laptop.It has/had ubuntu as dual boot. At one time, I know
> >it had the ability to see the screen when logging on, to select the OS. This
> >no longer happens. 
> 
> >Any one know what might be happening, or what I can check? 
> 
> you may have the time grub displays set to zero
> 
> sudo nano etc/default/grub
> 
> GRUB_TIMEOUT=0
> 
> or have the prober turned off
> 
> GRUB_DISABLE_OS_PROBER=true
> 
> change to suit your needs, then
> 
> sudo update-grub
> 
> personally I have
> 
> GRUB_TIMEOUT=2
> GRUB_DEFAULT=saved
> GRUB_SAVEDEFAULT=true
> 
> which (if no user interaction) runs the last OS choosen
> 

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