I write my electrum private seed on the piece of paper and save it with me but i fear that someone near to me may read that paper and get access to the wallet. So i copied the wallet file on my usb and also write the seed in notepad in that usb. Now i want to password protect that usb or encrypt it so if anyone tries to access that usb, he can never open and read it contents. How to do this ?
How to provide a password on a USB has been given a guide in a way that is familiar to Windows users by Bitcoin Smith.
Then, you are still confused I see. Even though that is the right answer, it is related to how to give a password to the USB which contains the seed.
More than one backup needs to be saved and I am not very sure about saving it on a USB because there is still a chance that the USB will be infected with a virus which will cause the files to be damaged and no longer accessible.
How do i create a passphrase for my wallet which i have already created?
This can be done by creating a new wallet.