[SOLVED] GRUB gone after imaging Linux + Windows 10 to new larger SSD
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copy the windows menu that works from /boot/grub/grub.cfg to /etc/grub.d/40_custom below the text that is already there. make sure the last line of the menu entry is }
Add this line
Code:
GRUB_DISABLE_OS_PROBER="true"
to /etc/default/grub and then run update-grub.
What this does is disable the os-prober from searching for other installed systems and adding them to the grub.cfg file when update-grub is run.
The /etc/grub.d/40_custom manually adds other systems when update-grub is run.
IF you don't want to disable the os-prober, you can copy the /etc/grub.d/40_custom to /etc/grub.d/25_custom. This will put the manual entries before the os-prober entries in /boot/grub/grub.cfg when update-grub is run.
Success. Thank you.
Just one thing left: in the new GRUB menu (attached) the boot defaults to the top item in the menu, i.e. Mint Cinnamon. For the time being, until I have all my Linux apps installed, I would prefer the system to default-boot to Windows 10. How do I set that ? I've looked in /boot/grub/grub.cfg and /etc/grub.d/40_custom and /etc/default/grub but cannot see where this parameter is set.
it is in /etc/default/grub
change default=0 to default=4 if it is the windows menu after the highlighted menu entry, default= counts from 0. Don't forget to run update-grub.
Last edited by colorpurple21859; 01-07-2019 at 01:54 PM.
Instead of a hard-coded default, you may wish to consider defaulting to whichever selection was booted last. In /etc/default/grub, remove # from in front of
it is in /etc/default/grub
change default=0 to default=4 if it is the windows menu after the highlighted menu entry, default= counts from 0. Don't forget to run update-grub.
Thank you. Problem solved. Cleanly defaulting GRUB menu now.
Instead of a hard-coded default, you may wish to consider defaulting to whichever selection was booted last. In /etc/default/grub, remove # from in front of
Code:
# GRUB_SAVEDEFAULT="true"
before updating grub.
Thanks. Neat idea.
I couldn't find # GRUB_SAVEDEFAULT="true" in /etc/default/grub to remove the #. Can I simply add GRUB_SAVEDEFAULT="true" to the end of /etc/default/grub ?
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