Hello again.
> I found the Acer C7 upgrade instructions
Both storage and memory is replacable/upgradable. The maximum supported RAM
is 16GB. You can also replace the HDD with SSD, or with a higher capacity
HDD, but there is a slight difference in the thickness of the drive accepted
by the laptop, and you cannot install a classic-sized 2.5". The following
video shows a hack about how can you install a classic-sized 2.5" SSD into
it:
http://www.youtube.com/watch?v=s0gNi4sNLiQ
> So, with this computer, do you install ChrUbuntu, then use a package that
converts it into Trisquel?
This is pretty much the basic idea how should this be easily accomplished by
a general user. This older model lacks SeaBIOS and ChrUbuntu is a community
hack to make a workaround for this problem. On "Pixel", you can install
Trisquel directly from ISO.
Either you choose to buy "C7" or "Pixel", you get the best what money can buy
today.