Linux: Boot a 2TB+ partition or Larger Array Using Grub

Posted on in Categories CentOS, data center, fedora linux, File system, Gentoo Linux, Hardware, High performance computing, Howto, kernel, Linux, Linux Scalability, Linux Virtualization, RedHat/Fedora Linux, Storage, Tips, vmware, xen last updated December 6, 2008

I’ve already written about creating a partition size larger than 2TB under Linux using GNU parted command with GPT. In this tutorial, I will provide instructions for booting to a flat 2TB or larger RAID array under Linux using the GRUB boot loader.

How Do I Secure Grub Boot Loader?

Posted on in Categories Debian Linux, Howto, Linux, Linux desktop, RedHat/Fedora Linux, Security, Sys admin, Tips, Ubuntu Linux last updated October 27, 2009

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 might result into compromise system security.

For example, anyone can access the data or change the settings. However you can setup a password for grub with password option. This option forces grub to ask for a password before making any changes or entering into single user mode. You need to type p followed by password.