Here, you need to shut down your PC and then boot it from the live CD. If you are bothered by Grub Loading Error 15, you need to make sure that the kernel file exists on your computer. This GRUB Loading Error always appears when a required partition is not on the selected disk. Grub Loading Error 22: No such partition.This GRUB Loading Error always appears when the disk is not recognized by the BIOS in the system. Grub Loading Error 21: Selected disk does not exist.This GRUB Loading Error always appears when the required partition exists, but the type of file system is not recognized by GRUB. Grub Loading Error 17: Cannot mount selected partition.This GRUB Loading Error always appears when a specified file name cannot be found by the system. Grub Loading Error 15: File not found.The GRUB loading error code always appears in Grub Stage 1.5 or Stage 2.0. You might just receive the error message saying Hard Disk Error, Floppy Error, Read Error, or Geom Error. Usually, there are no error codes in Grub Stage 1. Now, we will introduce these common GRUB Loading Errors in the following content. Tip: If you encounter the BOOTMGR is missing issue, you can refer to this article to solve it: 11 Solutions to 'BOOTMGR Is Missing' Error in Windows 10/8/7 If you are facing NTLDR is missing issue, you can read this post to get the solutions: 10 Solutions to Fix NTLDR Is Missing in Windows 10/8/7. If not, you might encounter different kinds of GRUB errors like Grub Loading Error 15, 17, 21, 22…. You need to configure GRUB properly when using your computer. But, it supports both Windows and Linux kernels and has more features.

It is similar to NTLDR or BOOTMGR on Windows.

It provides you a choice to boot one of multiple operating systems installed on a computer or choose a specific kernel configuration available on a particular operating system’s partitions.

It is a boot loader package from the GNU Project. GRUB, which is also known as GNU GRUB, stands for GNU GRand Unified Bootloader.

If You Lose Your Data Due to GRUB Loading Errors.

Do you know what they are, the causes of these GRUB Load Errors, and how to fix them to make your computer go back to normal? This MiniTool article shows you the answers. When you boot your computer, you might find that your computer is stuck in Grub Loading Error 15, 17, 21, or 22.

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