[xubuntu-users] Upgrading from 32bit to 64bit

[Peter Flynn]

A rather odd request. I have a Dell Optiplex 745 which I rescued from
oblivion last year when an office was being cleared out. I hurriedly
installed Xubuntu 16.04 on it and it's been fine.

It now turns out that I used a USB containing the 32bit distribution
instead of the 64bit, so I wanted to know if there is a way to "upgrade"
in place from 32bit 16.04 to 64bit 16.04

The 745 runs a 64bit processor and architecture, from what I have been
able to determine (at least, it boots from the 64bit ISO on a USB stick,
and everything seems to run OK).

Or do I have to do a from-scratch installation (not a major problem, as
/home is on a separate partition, and most all the important stuff is on
SVN repos).

///Peter