You wrote: >>> "
Well, 10GB might be fine. I don't know how much it takes in Ubuntu but I always have about 15GB for the root. Keep the root but shrink the /home as much as you can. Then resize it as you want to 10-15GB for another root and the rest for home. Use Gparted for that.
http://www.howtogeek.com/114503/how-to-resize-your-ubuntu-partitions/"
Now that i have used Ubuntu 14.04, it consumes a lot of power as I notice the fan runs at high speed,
unlike my WIndows 7.
So I am looking at lightweight distros, like Lubuntu or CurnchBang.
Both use Debian as base distro.
This observation is also confirmed by this article:
"This setup, which is pretty minimalist in terms of battery draining apps, would still manage to drain the battery in under four hours in Ubuntu 12.04, sometimes not lasting much more than three hours. I switched to running Ubuntu in VMware (using OS X as the base system), and battery life improved somewhat, consistently lasting about four hours, but that's still not very good."
I felt like I wasted a lot of time with Ubuntu!
Below would be my new multi-boot scenario ( not sure it would work, see following questions next ...) :
Two roots: One used by existing Ubuntu 14.04, and the other would be for Lubuntu or CrunchBang.
/home : shared by above root Debian-based distros.
Q1: So if I create another root partition, do I use "/" as the new root name for the 2nd partition?
The "/" is the root name based on instructions for creating a dual boot with root, /, and /home partition
from online help.s
Using "/" as root name would be in conflict with same root name, / , assigned for existing partion, i.e. Ubuntu 14.04.
I am worried if I use some other root name, e.g. /lubuntu or /crunchbang, it could cause unforseen problem b'cos
"/" is the default name for "The ROOT" of Linux file system.
Q2: Can the two distros share the same /home partition, where there is already data in /home when I installed ubuntu 14.04 earlier?
Thanks.