![how to change grub theme how to change grub theme](https://www.unixmen.com/wp-content/uploads/2016/03/GNU-GRUB_3-560x420-1-696x334.png)
![how to change grub theme how to change grub theme](https://images.pling.com/img/00/00/37/10/56/1111545/173878-1.png)
Usually, this option appears at bottom of dialog box after selecting a couple of options. After all your Windows files are loaded then select repair your computer.It can be accessed by pressing F2 or Del. This can be done by selecting a boot medium either by pressing F12 or by setting boot order in your bootloader. Launch it on your PC and run the installer.Get a Windows OS installation DVD, borrow it from your friend or anyone.If you have dual boot and any of the above steps aren’t working, this might come in handy for you. After a successful update, reboot, and voila problem was solved.
#How to change grub theme update
Now update grub by typing sudo update-grub. You should replace /dev/sda with the correct partition or disk. Mount the root partition by typing /mnt and boot to /mnt/boot and hit enter.Open terminal after booting up into the live desktop.Your error is fixed, and the distro is back. You may be asked for a data connection if GRUB files are lost and the system wants to download them.
#How to change grub theme password
You may be asked for your password type it, the password will remain invisible, which is normal. Now hit Ctrl+Alt+T and open terminal and type sudo update-grub and then sudo grub-install /dev/sda. Now your PC/Laptop will reboot, and you will be on your desktop.
![how to change grub theme how to change grub theme](https://lukewickstead.files.wordpress.com/2010/12/debianflow.png)
Now you are here at LinuxAndUbunu to see how you can tackle this problem, save your precious data, and boot normally into Linux again. Just this lovely morning, you started your laptop and Boom! You get a black screen with a message that “Unknown Filesystem” and a message saying grub rescue.