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How Do I Run Linux from Grub?

Maya Lin-Takahashi • • 4 min read
How Do I Run Linux from Grub?
Contents

How do you use GRUB?

How to boot an OS directly with GRUB

  1. Set GRUB’s root device to the drive where the OS images are stored by the command root (see root).
  2. Load the kernel image by the command kernel (see kernel).
  3. If you need modules, load them with the command module (see module) or modulenounzip (see modulenounzip).

How do I boot from ISO GRUB?

Once the menuentry has been created and GRUB 2 updated, the ISO entry will appear on the GRUB menu during boot. If the entry was created in the /etc/grub. d/40_custom file, it will appear after the Ubuntu and other OS listings on the main GRUB menu. To boot the ISO, highlight the entry and press ENTER or F10.

Maya Lin-Takahashi
Author

Maya Lin-Takahashi

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.