I'm trying to update my grub config on ubuntu server 12.04.3 to include the GRUB_RECORDFAIL_TIMEOUT variable as described here: .
The procedure says run update-grub after making the change but it's doesn't appear to be on my system. How can I install this?
8 Answers
The update-grub command was created to make things easier - it is simply a shell script in /usr/sbin/:
#!/bin/sh
set -e
exec grub-mkconfig -o /boot/grub/grub.cfg "$@"If it is not there, you can make your own. To do that, run this, and paste in the above script:
sudo nano /usr/sbin/update-grubSave with Ctrl+O, and exit with Ctrl+X.
Then run these:
sudo chown root:root /usr/sbin/update-grub
sudo chmod 755 /usr/sbin/update-grubAnd you should now be able to run update-grub. :-)
I would reinstall grub by running the following command:
sudo apt-get update; sudo apt-get install --reinstall grubyou need to run it with root priviledges, run: sudo update-grub. Unless you removed it, its there in the system.
If sudo update-grub doesn't work for you,
Try this
sudo grub-mkconfig -o /boot/grub/grub.cfgIt will make grub entry for you.
This is supplemental to Sajith Sajan's answer:
Take a look in /usr/sbin and /boot. You may need to run:
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
instead.
For me, the issue was that I was the root user, at the time I attempted to run update-grub. When exit to my regular user account sudo update-grub works without error.
In my case, I tried this answer to do sudo apt-get update, but I get lock held by packagekitd process error with pid, even reboot still same.
I use ps alxww --forest to confirm pid of packagekitd. Then sudo strace -f -s 100 -p <PID> to attach pid to strace to see what's going on.
The log shows 2 paths get downloading, one of them is '/var/lib/apt/lists/partial/tw.archive.ubuntu.com_ubuntu_dists_focal-updates_Contents-amd64.gz'.
Simply use sudo watch ls -lathi '/var/lib/apt/lists/partial/' to watch the progress until it's done. Now sudo apt update is working. sudo apt-get install --reinstall grub shows Package grub is not available. But try again with sudo grub-update, the command is come back.
I'm new to terminal and StackExchange, but I found a way around to **update-grub command not found **
:sudo apt-get update; sudo apt-get install --reinstall grub
I used the above command to reinstall GRUB, but it gave me
Package grub is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: grub2-common:i386 grub-efi-amd64:i386 grub2-common grub-pc grub-efi-ia32 grub-efi-amd64
So i tried to reinstall above packages with :sudo apt-get install --reinstall (ABOVE 6 PACKAGES) EX: :sudo apt-get install --reinstall grub2-common
Then I used :sudo update-grub to update it, and it worked displaying
Adding boot menu entry for UEFI Firmware Settings ... done
then i used the following
:sudo apt install grub-efi-amd64:
:sudo update-grub:
:sudo grub-install:
Reboot and use the following
:sudo update-grub:
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