- So How Do We Fix It When Things Go Wrong?
Manually booting your operating system from GRUB is actually pretty easy once you know what you need to do. Before trying to actually do anything with GRUB, you should examine what GRUB can actually see in your … See more
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When your system boots into the GRUB command line, you can manually boot your operating system using a series of commands. This is useful for troubleshooting or recovering a non-booting system.
Example
grub> set root=(hd0,1)grub> linux /boot/vmlinuz-3.13.0-29-generic root=/dev/sda1grub> initrd /boot/initrd.img-3.13.0-29-genericgrub> bootSteps to Boot from GRUB Command Line
1. Set the Root Partition
Identify and set the root partition where your Linux filesystem is located.
grub> set root=(hd0,1)This command sets the root partition to (hd0,1), which corresponds to /dev/sda1.
2. Load the Linux Kernel
Specify the path to the Linux kernel.
grub> linux /boot/vmlinuz-3.13.0-29-generic root=/dev/sda1Here, /boot/vmlinuz-3.13.0-29-generic is the kernel image, and root=/dev/sda1 specifies the root filesystem.
3. Load the Initial RAM Disk
Load the initial RAM disk (initrd) image.
grub> initrd /boot/initrd.img-3.13.0-29-genericThis command loads the initrd image required for booting.
4. Boot the System
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