Re: A further question on my "how to move to an NVME disk" question

[Pascal Hambourg]

Le 22/11/2019 à 09:37, Chris Green a écrit :
> > >       /dev/sdb
> > >           /dev/sdb1 - Linux partition with /boot and the rest of 19.04 
> > > installation
> > >           /dev/sdb2 - Small partition with /boot for 19.10 whose files are on 
> > > /dev/nvme0n1p2
> > >
> > >       /dev/sdc
> > >           /dev/sdc1 - /home
> > >
> > >       /dev/nvme0n1
> > >           /dev/nvme0n1p1 - swap
> > >           /dev/nvme0n1p2 - 19.10 installation (but no /boot)
(...)
> I think I'll probably install 19.10 again
(...)
> So I choose "something else" in the installation disk allocation and
> tell it to use /dev/sdb1 for boot, /dev/nvme0n1p1 for swap and
> /dev/nvme0n1p2 for the rest.
(...)
> Then is it best to run update-grub on the old 19.04 or the new 19.10
> installation?  Or doesn't it really matter?

If you use /dev/sdb1, which currently contains Ubuntu 19.04, as /boot 
for Ubuntu 19.10, then it will destroy Ubuntu 19.04 so your question is 
rather irrelevant.