Boot confusion

[Jack McGee]

On 6/12/21 6:55 PM, Liam Proven wrote:
> On Sat, 12 Jun 2021 at 03:09, Jack McGee <jack at greendesk.net> wrote:
>> I guess I partition the 1tb SSD for 100 gig for 20.04 root filesystem.
>> Maybe another backup root filesystem also.  Swap here also.
> OK, fair enough. Big but no harm in that.
>
> I avoid putting swap on SSD if I can, because in case of a memory leak
> or something and the machine thrashing, it could potentially wear out
> flash -- but to be honest it's a remote chance these days. If you have
> enough RAM most modern machines will barely swap at all and you won't
> notice the performance difference, but having swap on SSD means that
> hibernation and wake will be much quicker.
>

I guess my question, is what is best command to copy root filesystem to 
new drives.

I guess I can install grub on that drive after I have moved root filesystem?



>> Nothing worth saving on the 1tb hard drive.  There are some old home
>> directories I need to sort throuhh, but it's just 10.04, 14.04 old
>> installations, etc
> May be worth knowing that so long as the usernames are different, you
> can consolidate lots of home *directories* onto a single home
> *partition*.
>
> I have had half a dozen distros sharing one home partition -- I save
> my default `lproven` for Ubuntu LTS with Unity, and have `liamf` for
> Fedora, `liamb` for Bodhi, `liamd` for Deepin, `liamx` for Xubuntu,
> `liamm` for Mint, etc. Works 100% fine, no issues.
>
> So long as there's no user account with $name on any particular
> distro, it will never look in a folder called /home/$name. Doesn't
> even matter if all the users are UID 1000, GID 1000 -- the name is
> more important.
>
> So you can mount all the old home partitions, rename the main account,
> then copy them into one big /home partition and they won't interfere
> at all.
>