Hello

Many years ago, I bought a fraction of Bitcoin at a Bitcoin ATM. Now, I intend to
sweep the entire amount from the paper wallet into Electrum running on Tails
(without persistence).

The private Keys do start with K and L.



Questions:
1.
Can I blindly trust and follow this guide?
https://bitcoinelectrum.com/sweeping-your-private-keys-into-electrum/


2.
Does that mean, after creating a new Electrum wallet and writing down the automatically
generated new seed, the computer could be rebooted without loosing any funds?



Thank's lot in advance for any feedback!

.
.
PS:
After the funds have arrived in Electrum, I will transfer them to the Relai app, which is
linked to my IBAN bank account. This makes trading very easy.