What does reset do to Ledger Nano S?

[sarannah]

My Ledger Nano S don't have any coins in it right now.

If i reset it, does it give totally new address space, which is not related to old addresses at all?

Can average joe, exchange, tax man, anybody figure out that those old and new addresses are from same Ledger Nano S?

[TryNinja]

If i reset it, does it give totally new address space, which is not related to old addresses at all?

If you reset and create a new wallet, yes.

Can average joe, exchange, tax man, anybody figure out that those old and new addresses are from same Ledger Nano S?

No. They can't even know that those addresses belong to a Ledger Nano S wallet.

[bob123]

When you reset your nano s (and initialize it again) you will be given a random seed (out of 2.9 * 10^79).
This seed is used to generate your Master public key (MPK), which is then used to create all of your addresses.
Noone can find out that the current MPK is anyhow related to the last MPK. Simply because its just not possible.
Addresses generated with your current MPK can still be linked to other addresses generated with the same MPK if someone has this MPK.