About this tag
The ei.cfg file is a configuration file found in Windows installation ISOs that controls which edition of Windows is installed. Users often modify or delete ei.cfg to bypass edition restrictions, such as installing an OEM license with a retail ISO or selecting the edition during setup. Common issues include ISOs failing to boot after modification, often due to improper ISO rebuilding or burning methods. Tools like Magic ISO may cause problems if not used correctly. The file is also relevant for identifying RTM builds, as its removal can allow upgrade paths. Troubleshooting tips include using proper ISO creation software and ensuring the ISO remains bootable after editing.
  1. T

    Windows 8 Modified Windows_8 ISO won't boot in VM after modification

    I extracted a Windows_8 ISO and made some changes to ei.cfg. I recomposed the sources back to a bootable UDF ISO but this ISO fails to boot in a VM. I get a blank screen during boot. Interestingly if I extract the same ISO and recompose it back again without doing any modifications then the ISO...
  2. R

    Windows 8 New rig with win 8.1 pro oem license

    Hi everybody, I am writing this in a hope that someone here can help me, as Microsoft helpdesk and OEM reseller are just jer.ing me around. So, this is how it begins... I bought part to assemble my home PC, and on g2play I bought cheap win 8.1 pro OEM x32/x64 license key. After PC assembly...
    • RajkoX
    • Thread
    • 64-bit activation ei.cfg genuine key help desk home pc installation iso license key media player microsoft oem license pc assembly reseller issue retail version software issues tech support troubleshooting user experience windows 8.1
    • Replies: 7
    • Forum: Windows Upgrade and Installation
  3. D

    Windows 7 Help with ei.cfg

    I have downloaded W7 from a few places and I cannot get the ei.cfg trick to work. I have tried two ways. BTW, I use magic ISO, which I am starting to believe is the problem. I d/l the ISO and open it with MI, then delete the ei.cfg file and save as an ISO file, burn to DVD. That gives me a...
    • donbailey
    • Thread
    • blank dvd boot issues burning disc dvd dvd-rw ei.cfg error extraction file deletion image files installation iso magiciso media creation recovery software issues troubleshooting windows 7 windows installation
    • Replies: 3
    • Forum: Windows Upgrade and Installation
  4. busydog

    7600 is RTM -- My Proof

    With perhaps a sub-build still coming, I content 7600 is RTM. Here is my thinking.... 1) WINVER shows no expiration date.... all previous builds have had an expiration date. 2) No watermark. All previous builds have had a watermark. 3) Previous RC serials don't work (although 7264 also fits...
    • busydog
    • News
    • activation build 7600 ei.cfg home premium release candidate rtm ultimate upgrade windows 7
    • Replies: 14
    • Forum: Windows News