I'm new to Linux and I've been trialing Xubuntu 14.04 via USB Flash. I'm about ready to install it on to an older computer (X86, 32bit, 1.28Gb RAM, Intel 'Celeron' 2.3Mhz CPU, 80Gb HDD). My question is in three parts:
(1) I understand from articles on this site that Xubuntu will overwrite the existing OS (XP) but I want to make certain that it will overwrite the existing partitions whilst installing, or will I need to format the HDD first for a clean install?
(2) With the future intention of increasing the RAM to its system maximum of 4Gb, should I make the swap partition, at install, 4.5Gb? Most of my software usage is CAD, photo-editing, office work and internet browsing.
(3) And finally, should I choose the 'encrypt LVM' option on install, just to be on the safe side of paranoid?
In anticipation of any responses, many thanks; and could you please, please, keep any responses clear and simple, because I am not computer savvy... Although I'm always willing to learn. Again, thanks.