My system normally boots from /dev/sdd1.  I've installed Plop to /dev/sda1. If I switch on the machine and press F12 to select a boot device, then pick /dev/sda1, Plop loads.   When I installed Plop, I chose the MBR of /dev/sda1. Is there a way to put a menu entry in Grub2 that would tell the system to boot from /dev/sda1? I did manage to create a menu entry in /etc/grub.d/40_custom that lets me load plop, but when I do, it gives me a warning that I can't save changes.  Is there a way to fix it so I can save changes?  Here is my 40_custom file. #!/bin/sh exec tail -n +3 $0 # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment.  Be careful not to change # the 'exec tail' line above. menuentry "Plop bootloader" { insmod ext2         set root='hd3,msdos1'         if [ x$feature_platform_search_hint = xy ]; then           search --no-floppy --fs-uuid --set=root --hint-bios=hd3,msdos1 --hint-efi=hd3,msdos1 --hint-baremetal=ahci3,msdos1 15d4e39e-2e6c-4ee4-9a24-67fd9ccab8f9         else           search --no-floppy --fs-uuid --set=root 15d4e39e-2e6c-4ee4-9a24-67fd9ccab8f9         fi         linux   /boot/vmlinuz-4.15.0-47-generic root=UUID=15d4e39e-2e6c-4ee4-9a24-67fd9ccab8f9         linux16 /boot/plpbt.bin } thanks --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org To subscribe, unsubscribe, or to change your mail settings: https://lists.phxlinux.org/mailman/listinfo/plug-discuss