Tag: grub

PAE-Kernel extenstion: 4GB of RAM not showing

Why do server not showing up 4GB of RAM? By default a server supports up to a 4GB of RAM i.e. on a non-PAE kernel. If you wish to add 4GB RAM or more, you will have to install kernel-PAE package which addresses upto 64GB of RAM. Once you install […]

How Do I Secure Grub Boot Loader?

You can set a password for the GRUB bootloader. This prevents users from entering single user mode or changing settings at boot time. When your system is rebooted, grub presents the boot option menu. From this menu one can easily login into a single user mode without the password which […]

Reinstall the Boot Loader on Redhat

In many cases, the GRUB boot loader can mistakenly be deleted, corrupted, or replaced by other operating systems. The following steps detail the process on how GRUB is reinstalled on the master boot record: Boot the system from an installation boot medium. Type linux rescue at the installation boot Really […]