![]() Much better, faster and easier than using OSCDIMG. It can also extract the bootable binaries from a boot disk and save them for future use. In my case, I have UltraISO (but there are many other similar programs), which can extract the image from a CD or DVD, bootable part and all, and allows me to edit it at will and save it back. I’d just like to point out that it’s very easy to generate and edit an ISO if you have proper software. Thanks a lot! This is going to help me perform a Windows 8.1 100% clean install without having to install “8.0” first. Microsoft has it all documented (both ei.cfg and oscdimg.exe). PPS: If you omit EditionID from ei.cfg, you will get an option to select edition that you would like (Professional or Core). While Windows 8 key won't work during installation, it will work nicely once everything is fully installed. PS: This also means that you can use your Windows 8 key to activate Windows 8.1 after installation is done. Just burn it to CD or make bootable USB and you are ready to go. ![]() Otherwise file will be written in Virtual store (usually at %USERPROFILE%\AppData\Local\VirtualStore).įinally we have image that will not ask you for key during install and it will allow you to skip key entry for 30 days. If you have a single drive, place file into a subdirectory. This will create bootable Windows81.iso image in a root directory of your second drive. Scanning source tree (2000 files in 803 directories) Scanning source tree complete (2094 files in 867 directories) Computing directory information complete Image file is 3984359424 bytes Writing 2094 files in 867 directories to D:\Windows81.iso 100% complete Final image file is 3990419456 bytes Done. Licensed only for producing Microsoft authorized content. To create bootable ISO image, I enter cmd.exe and there execute: > CD "C:\Program Files (x86)\Windows Kits\8.1\Assessment and Deployment Kit\Deployment Tools\x86\Oscdimg" > OSCDIMG.EXE -u1 -bC:\Windows81\boot\ C:\Windows81 D:\Windows81.iso OSCDIMG 2.56 CD-ROM and DVD-ROM Premastering Utility Copyright (C) Microsoft, 1993-2012. Only thing that you really need to install for this guide are Deployment Tools. Since I wanted to adjust Windows 8.1, I downloaded Windows ADK for Windows 8.1 but Windows 8 ADK is also freely available. ![]() If nothing else, it is easier to backup a single ISO file than over a writable USB.įor bootable image creation we need Windows Assessment and Deployment Kit (or Windows ADK) for desired Windows version. While this is not strictly necessary if you are creating bootable USB, I find having pre-prepared image an useful step. Only thing missing is creating new ISO file that we can burn on DVD. In my case I wanted to specify Professional edition expecting retail key so I created file with following content: Professional Retail 0 Once copy operation has completed, we need to create ei.cfg in C:\Windows81\sources directory. Assuming that you have your DVD at letter W: and that you want staging directory at C:\Windows81, this would be: > ROBOCOPY W:\ C:\Windows81 /MIR … Very first step is to copy all files from Windows DVD. Only now it requires some preparation first. Thus I was really pissed off when I found that feature was missing in Windows 8. Mind you, I did have keys for that particular version (MSDN subscription is a great thing) but I was regularly too lazy to look key up for a version that would essentially get installed and deleted within a day. More than once I also used this feature to reproduce a bug in different OS language (e.g. Only once I was perfectly satisfied with machine, I would activate it. I found this really useful during setup of a new machine when I would have multiple reinstalls while trying out various drivers and performing their troubleshooting. Instead of entering 25-digit key, you could just select skip and Windows would give you 30 days after install to setup everything before requiring valid product key. One great feature Windows 7 was possibility to install them without needing a key.
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