GRUB install devices:
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grub-pc: Running grub-install ...
You chose not to install GRUB to any devices. If you continue, the boot loader
may not be properly configured, and when this computer next starts up it will
use whatever was previously in the boot sector. If there is an earlier version
of GRUB 2 in the boot sector, it may be unable to load modules or handle the
current configuration file.
If you are already using a different boot loader and want to carry on doing so,
or if this is a special environment where you do not need a boot loader, then
you should continue anyway. Otherwise, you should install GRUB somewhere.
Continue without installing GRUB? [yes/no]
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The GRUB boot loader was previously installed to a disk that is no longer
present, or whose unique identifier has changed for some reason. It is important
to make sure that the installed GRUB core image stays in sync with GRUB modules
and grub.cfg. Please check again to make sure that GRUB is written to the
appropriate boot devices.
If you're unsure which drive is designated as boot drive by your BIOS, it is
often a good idea to install GRUB to all of them.
Note: it is possible to install GRUB to partition boot records as well, and some
appropriate partitions are offered here. However, this forces GRUB to use the
blocklist mechanism, which makes it less reliable, and therefore is not
recommended.
