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Booting the system using a configuration file on a different partition.
If you end up in *GRUB2* boot prompt, it is also possible to boot using a _configfile_ that's located on another partition, as is often the case with multi-boot systems containing Ubuntu and Fedora. To boot the system using a configuration files on a different partition:
Load necessary modules to read the partitions.
insmod part_msdos
insmod xfs
insmod lvm
Set the root partition.
set root='hd0,msdos1'
Set the path to the configuration file.
configfile /grub2/grub.cfg
More information
The *hd0,msdos1* line shows the pertinent _boot_ partition, which holds the `grub.cfg` file. The setting may be different on your system. See also xref:using-grub2-prompt[Using the GRUB2 boot prompt] for more information.