[boot from USB Drive]

This is  a secure way to store your bitcoins on an encrypted USB drive.
 
What you will need?
 
1. USB Flash with minimum 8GB capacity
2. a DVD and DVD burner
3. a linux distro (I select AntiX Base, will tell you why...)
  
Creating Wallet:
 
- Download AntiX Base ISO from (https://antixlinux.com/download/), I used AntiX Base because it is lightweight, can encrypt entire drive and is bootable in old computers so you can access your wallet on almost any computer/laptop.
 
Note: You can use AntiX Full version or use any other distro like Tails or Ubuntu but disk encryption may not be available on installation step and you should do it yourself later (and make sure do it!).
 
- Burn linux ISO on a DVD/CD and reboot into linux:
  

 
- plug USB into PC and select Install:
 

 
- in AntiX installer window click on Next, select USB disk drive, click on 'auto-install using entrie disk`, check `Encrypt` and type strong password:
 

 
- click next, confirm installation and wait until installation complete.

- Now reboot but this time, "boot from USB Drive" not DVD!

- Type encrypted disk password and create user at first boot.
 
- select Web Browser from AntiX menu:


 
- Download Electrum Appimage version and it's signature from (https://electrum.org). (To download signature, right click on and select `Save Link As`)
 


- Open Terminal from menu and type:
 

Code:

cd Downloads
mv electrum-* ..
cd ..
chmod +x electrum-*.AppImage

Code:

gpg --recv-keys 2BD5824B7F9470E6
gpg --verify electrum-3.3.8-x86_64.AppImage.asc electrum-3.3.8-x86_64.AppImage

- make sure you see following message from last gpg command otherwise you downloaded fake electrum!
 

Code:

gpg: Good signature from "Thomas Voegtlin (https://electrum.org) <thomasv@electrum.org>"

- That's all. you can access Electrum from `Files` in AntiX desktop and securely create and use your wallet.