The first thing that grub does when booting is: loopback /snaps/pc-kernel_461.snap which kills QEMU.
In core20 that snap is on an 'EFI System' partition (vfat) whereas in core18 it's on a regular Linux (ext4) partition.
The first thing that grub does when booting is: pc-kernel_ 461.snap
loopback /snaps/
which kills QEMU.
In core20 that snap is on an 'EFI System' partition (vfat) whereas in core18 it's on a regular Linux (ext4) partition.