First buy a new pendrive not have to be big like a 256MB will do it. Don't plug it in to your pc! Get a CD then download a live cd (any linux can do it). Boot from it then make a virus test then get multibit. Create a new wallet to your pendrive and you're done. And remember NEVER PUT THIS PENDRIVE TO YOUR NORMAL Operation System only to the live cd.
Armory will need the original Bitcoin-QT that download the block chain so if you want it then you will need a larger pendrive 32GB minimum recommended.
https://blockchain.info/charts/blocks-sizeHow do you do transactions with this setup?
From the linux live cd. You write down you address to a paper.
So its just another online wallet that is on a CD? Topic is offline storage. I dont see how your idea fits in if you just have a CD to boot from on your regular online machine. Well the flaws I see:
- the CD will never have security updates unless you install them after booting or create new updated CDs on a regular basis. So in order to be up to date with possible critical update you have to go online
- the CD will not (at least as you describe it) include multibit so you need to download and verify Multbit every time
- live linux from a CD/DVD is slow as hell. Id say with updates youd need ~2-3 hours to make a TX. Experiences might differ on different systems
-The live CD would access the HDD (with your regular online OS) which could in turn infect the "clean system" and make all the precautions useless. Its in the tin foil hat area, but a possible attack.
- you have a single source of failure. If the USB stick dies your coins are gone.
So you say: we can't make offline wallet 'cause you have to get the block chain. Well thats true ,but then why there are many tutorials about it?