There are many reasons why you may need to reinstall GRUB: corrupted boot partition; GRUB got overridden after Windows installation; some unsupported Linux kernel parameters have been set in a GRUB configuration file and the system is not booting anymore but this can’t be fixed from a GRUB menu as it is not showing up, […]
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The volume “boot” has only 0 bytes disk space remaining
From time to time, when your operating system (Ubuntu, Linux Mint or similar) tries to install new kernel data you may get the following error message: The volume “boot” has only 0 bytes disk space remaining. This error means that the /boot partition is full (in most cases there are some old kernels). To fix […]
Ubuntu, CentOS – Enable or Disable Service Autostart in Linux
Very often it is needed to enable or disable autostart of some services in Linux. There are different init systems exist, but on Ubuntu and CentOS the most common are SysV, Upstart and systemd. Depending on distribution, the behavior of a service during system’s boot in Linux can be configured with systemctl or chkconfig commands. […]
HowTo: Remount /etc/fstab Without Reboot in Linux
The configuration file /etc/fstab contains the necessary information to automate the process of mounting partitions. You would normally have to reboot your Linux system, after editing this file. There is a simple way which will remount all the partitions from your /etc/fstab file without restarting the system. Run the following command as root: # mount […]
Remote Hard Reset of a Linux Server if Reboot Doesn’t Work
Sometimes, reboot or shutdown -r now, don’t work anymore. That really sucks, especially if you have no access to the server room or you just don’t want to get up. But there is another solution if your Kernel is compiled with CONFIG_MAGIC_SYSRQ (sysrq-trigger). If so, you have the possibility so send binding command. Reset your […]