Downgrade from win8.1up1 enterprise to win8.1up1 professional

Discussion in 'Windows 8' started by allmythy, Oct 24, 2015.

  1. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    it's possible ?
    i have already tried to change reg keys and install with win8.1 pro dvd but i have not the possibility to upgrade my system, only clean install and i'll lost my settings and software
    thank you
     
  2. xinso

    xinso MDL Guru

    Mar 5, 2009
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    #2 xinso, Oct 24, 2015
    Last edited by a moderator: Apr 20, 2017
    Step 1: Modify EditionID value Enterprise to Professional, or import pro.reg

    Before (ent.reg)
    Code:
    Windows Registry Editor Version 5.00
    
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion]
    "EditionID"="Enterprise"
    After (pro.reg)
    Code:
    Windows Registry Editor Version 5.00
    
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion]
    "EditionID"="Professional"
    Step 2: Run Windows 8.1 Pro to upgrade
     
  3. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    already done, but nothing...
    i have already tried to change reg keys and install with win8.1 pro dvd but i have not the possibility to upgrade my system, only clean install and i'll lost my settings and software
     
  4. xinso

    xinso MDL Guru

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    #4 xinso, Oct 24, 2015
    Last edited: Oct 24, 2015
    Is your System using WIMBoot/VHD? Or Language mismatched?
     
  5. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    how do I test it ?
    however the language il my current lauguage
    wimboot ?
    vhd ?
     
  6. xinso

    xinso MDL Guru

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    No problem here:

    Ent-to-Pro.png
     
  7. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    that screen does not appear to me, it goes directly to installation of os
    could you help me solve this problem ?
     
  8. xinso

    xinso MDL Guru

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    #8 xinso, Oct 24, 2015
    Last edited: Oct 24, 2015
    This does not sound right...

    No matter what, it should prompt the menu.

    How did you run the setup? On top of Enterprise? Or DVD/USB boot?
     
  9. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    on dvd of win8.1pro
     
  10. xinso

    xinso MDL Guru

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    #10 xinso, Oct 24, 2015
    Last edited by a moderator: Apr 20, 2017
    You run DVD\setup.exe on Enterprise?

    Normally the windows_8.1_with_update ISO should be Multiple-editions, i.e. Windows 8.1 Pro and Windows 8.1.

    Code:
    WIM Information:
    ---------------------
    GUID:        {B6EDC748-4E43-452A-BA2A-1002DA55E730}
    Image Count:    2
    Compression:    LZX
    Part Number:    1/1
    Attributes:    0xC
            VERIFY_DATA
            RP_FIX
    
    
    Image Index: 1
    -------------------
    Name:        Windows 8.1 Pro
    Description:    Windows 8.1 Pro
    Flags:        Professional
    Files:        90865
    Folders:        18662
    Expanded Size:    12127 MB
    
    
    Image Index: 2
    -------------------
    Name:        Windows 8.1
    Description:    Windows 8.1
    Flags:        Core
    Files:        90834
    Folders:        18804
    Expanded Size:    12052 MB
    Could you show me the link to the win8.1 pro DVD? Is it a Homebrew ISO?

    Or you input Windows 8.1 key?

    I am going to bed. Good night.
     
  11. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    yes in the dvd are two version base and pro, but i inserted ei.cfg for automatic selection of pro version
    the dvd is not homebrew
    i don't insert none key

    good night you too:)
     
  12. xinso

    xinso MDL Guru

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    #12 xinso, Oct 24, 2015
    Last edited by a moderator: Apr 20, 2017
    Well, I could not sleep now.

    Could you show me the content of EI.CFG?

    Code:
    [EditionID]
    Professional
    
    [Channel]
    Volume
    
    [VL]
    1
    or

    Code:
    [EditionID]
    Professional
    
    [Channel]
    Volume
    
    [VL]
    0
     
  13. abbodi1406

    abbodi1406 MDL KB0000001

    Feb 19, 2011
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    then try to delete ei.cfg, it sometimes mess with upgrades
     
  14. xinso

    xinso MDL Guru

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  15. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    - i've modified reg Keys, like you wrote on my my win8.1up1 x64 current os
    - i've deleted autounattended.xml from the 8.1 pro dvd
    - the ie.cfg on the same dvd is like this [EditionID]
    Professional

    [Channel]
    Volume

    [VL]
    1
    i got this error (sorry in italian), in the image
     

    Attached Files:

  16. xinso

    xinso MDL Guru

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    Could you please have it translated into English?
     
  17. allmythy

    allmythy MDL Junior Member

    Feb 15, 2010
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    ok, all right guys!!!
    i deleted the autounattended file and i soved!
    thank you for your support!