Transferring from Xbox one to Series X

Yes, you can transfer the Xbox One data to the Series X|S version. Instructions here https://support.rockstargames.com/a...-Xbox-One-to-PlayStation-5-or-Xbox-Series-X-S

Not really...

Xbox Series X games / upgrades / updates has to be installed onto the Series X internal or expansion card SSD,

You can have Xbox One games on your external hard drive that will get an Series X upgrade but the games will need to be transferred to the Series X and then the Series X upgrade will need to be downloaded onto the Series X SSD,

As an example...

I have Marvel Avengers on my external hard drive that will get the Series X upgrade and I will transfer the game over to the Series X SSD ready to download and update the game to the Series X version when available.

What games are you transferring? Which consoles are involved? If it's transferring from, say, a Series X/S to an Xbox One, then it may be because the games are S/X versions.

As to the expansion pack, I believe that is only available to the account that bought it and the console that account is on...it can't be transferred to another account on another console

I bought immortals fenyx rising on my xbox one and it won't transfer or start on my xbox series x.

To allow us to help you, can you explain how you are trying to transfer the game to your Series X console? And whjat happens when you try to transfer them? Take us through the steps you are trying.

As a quick guide:

To transfer from XBOX One to Series consoles, both consoles must be powered ON and connected to the same home network.

On your Series X console, go to MY GAMES & APPS>MANAGE>NETWORK TRANSFER

Ensure that ALLOW NETWORK TRANSFER is ticked, and then select your XBOX One console from the LOCAL CONSOLES list on the top right of the page.

You should now see all the games installed on your XBOX One console, simply check which ones you wish to transfer, and then click COPY SELECTED. If you are given more than one option where to store the selected games, choose the relevant destination drive. Series S/X specific games can be saved on any drive but MUST be played from the internal SSD or the official Seagate Expansion Card so it's less hassle to save them there rather than an external HDD or third-party SSD. Older games can be saved on any drive. Pay close attention to the size of the file, or files, you are transferring, and that there is sufficient space on the destination drive to store them.

The files will now transfer and you will see progress bars. A wired connection will give you faster transfer times. Once completed, the games should appear in your MY GAMES AND APPS lists on the Series X, and be playable as normal.

If the games do not play, make sure that you are signed into your Series X console with XBOX profile that purchased the games originally. Also make sure you are launching the game from either the internal SSD or the official Seagate Expansion Card, as Series X/S versions of games will not work from other, slower SSDs or hard drives as they are not fast enough.

I cant find anything online that is this specific. I just wanted to ask if the owners account library will be fully transferable from xbox one to the xbox series x. Honestly this will be a deciding factor on wether i buy it or build a lynux gaming
pc.

Your entire account will be transferred from Xbox One to Xbox Series X when you sign in on Xbox Series X, you just may have to download and install the games again that you have, you wont need to buy the game again as you already own them.

Bare in mind, if you want to go for a gaming PC and are looking to match or get the same spec's and performance as the Xbox Series X or better, you'd be looking at a price of around £2000 give or take.