Xbox One Fat (Insider), New HDD, OSU1 fails with E100.

Discus and support Xbox One Fat (Insider), New HDD, OSU1 fails with E100. in XboX Insiders to solve the problem; My Xbox One Fat was on an Insider build. Recovery OS shows: 26100.6214.amd64fre.xb_flt_2510ge.251125-1545 The original HDD died, I replaced it with a... Discussion in 'XboX Insiders' started by /u/VuVjetz, Jan 18, 2026 at 3:52 AM.

  1. /u/VuVjetz
    /u/VuVjetz Guest

    Xbox One Fat (Insider), New HDD, OSU1 fails with E100.


    My Xbox One Fat was on an Insider build.

    Recovery OS shows: 26100.6214.amd64fre.xb_flt_2510ge.251125-1545

    The original HDD died, I replaced it with a new drive.

    Using the latest public OSU1 (USB NTFS, correct $SystemUpdate).

    Offline System Update always fails with:

    E100 00000703 80910008

    Looks like OSU1 is older than my Insider recovery OS.

    Is there any way to recover an Insider Xbox after HDD failure, or do I have to wait for a newer OSU1?

    submitted by /u/VuVjetz
    [link] [comments]
     
    /u/VuVjetz, Jan 18, 2026 at 3:52 AM
    #1
  2. Kit Kon Thai Win User

    My Console is freezing after Login on XBOX Live.

    Had the same issue Burati. So i tried switching out HDD, i have (2) 360 Fat white ones. and the second HDD seem to be working fine and doesn't freeze. I'm starting to think its the HDD failing. whenever the xbox freeze it would make a click noise. My suggestion
    is to buy new HDD, it's not cheap but worth a try. Good luck.
  3. Temhotabot Win User

    Buying hard drive from another console??

    If you are asking about using an external hdd from one of the older fat consoles inside a newer slim console then you can not do that as it is against the XBL Terms of Service. You will need to buy an internal official MS hdd.
  4. Scaramoosh Win User

    External USB 3.0 HDD support will fix a lot of issues..

    It isn't space I care about, it is bandwidth and a 2.5 Laptop HDD isn't enough, I'm hoping for faster load times and higher bit rates with GameDVR.

    Also though, what happens when the HDD fails inside the Xbox One? It wont work once it does, you'll have to replace it, but the HDD will be software to format a new HDD so it works with the Xbox One.

    Basically in two years you're *** if it goes.
  5. Elohmn Win User

    250G hard drive not working

    Is it a HDD for the Xbox 360 S or is it an "old fat" one with the Case removed?
  6. whiteandshiny Win User

    Xbox One S Stuck on Applying Update

    Hey doing an offline update is meant to fix E100 E101 and E102 these errors normally refer to corruption on the HDD and could be a sign that the internal HDD has failed/is failing. I would contact microsoft as your next step and tell them the steps you have
    done to fix it and see if they can offer you any servicing options. https://support.xbox.com/contact-us
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Xbox One Fat (Insider), New HDD, OSU1 fails with E100.

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