ACPI Error while Installing on MSI GL62M 7RDX

[kpanic]

Ok, you must mount the hard drives too, otherwise you must boot the first boot using the grub editing again..

Please command:

Code:

gdisk /dev/sda

then press 'p' followed by ENTER and copy the lines here

(after 'p' you may press 'q' followed by ENTER to exit gdisk)