Hello, is there a loss of grub with this upgrade (from 20.04 LTS to 22.04LTS? thank you Have a nice day
We are not aware of any major issues such as described.
But like any software upgrade - whether minor or major you should keep really good backups of all your data. Clonezilla/Timeshift and Deja Dup should be used regularly - especially before a major uplift like 20.04 to 22.04.
is your system a dual boot configuration?
yes dual boot with windows 11
In addition, Ubuntu no longer shows other installed operating systems in the boot menu when upgrading, unless you are doing a fresh install and already have another operating system installed.
Do you have somehow access to the /etc/default/grub?
The line GRUB_TIMEOUT_STYLE=menu must be present. If not, alter or insert it.
After all: sudo update-grub in the termnal. Reboot.
This may be the GRUB_DISABLE_OS_PROBER issue.
What I would do is; first at the command line do a sudo update-grub
See if you can see the windows partitions. If not then;
edit file /etc/default/grub
add the line GRUB_DISABLE_OS_PROBER=false
Thanks for your answers, I will try
Actually, you don’t need to dig around in the terminal and enable os-prober anymore. Ubuntu automatically detects other operating systems now, but only at install time.
@Basilcat he was doing an upgrade.
@makitso I upgraded from Kubuntu 21.10 to 22.04 and never had to probe around in grub to let it show windows.