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CachyOS

FAQ

Frequently asked questions

Here are some frequently asked questions. We recommend to read that all users, especially those using CachyOS or Arch-based distributions.

Software management FAQ

Here are all the questions related to the installation and uninstallation of software on your system.

How can I update the system?

sudo pacman -Syu

How can I install a package?

sudo pacman -S package

How can I remove a package?

sudo pacman -R package

How can I remove a package and its dependencies that are no longer needed by other packages?

sudo pacman -Rs package

Fix “unable to lock database” Error in CachyOS - Arch Linux

sudo rm /var/lib/pacman/db.lck

How to revert to an older version of the package?

If you install the latest update and find out a specific package doesn’t work or a newer version of the software introduces a bug. You definitely want to come back to the previous version.

  1. Go into the pacman cache and find the needed package. 
    cd /var/cache/pacman/pkg
  2. Install the needed package. 
    sudo pacman -U package

System maintanance FAQ

Here are all the questions related to the system maintenance or changes of configurations of your system.

How can I update GRUB after sudo pacman -Syu

This is indicated by the following text in the terminal and usually comes after a sudo pacman -Syu: grub packages were updated.

:: To use the new features provided in this GRUB update, it is recommended
   to install it to the MBR or UEFI. Due to potential configuration
   incompatibilities, it is advised to run both, installation and generation
   of configuration:
     $ grub-install ...
     $ grub-mkconfig -o /boot/grub/grub.cfg

If you have UEFI

To update GRUB on a UEFI system, simply run the following commands:

  1. sudo grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=cachyos
  2. sudo grub-mkconfig -o /boot/grub/grub.cfg

If you have BIOS

To update GRUB on a BIOS system, run the following command:

  1. sudo grub-install --target=i386-pc /dev/sda
  2. sudo grub-mkconfig -o /boot/grub/grub.cfg