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At our computer shop, we followed the instructions for creating a Windows 7 disk for any edition (SOURCE:, one disk for 32 bit and one disk for 64 bit. I am not finding any information on creating such a disk with Service Pack 1 slipstreamed into it. I looked here on Superuser, and found links for RT 7 to put it in, but it creates one disk per edition, per architecture. Is there a way to have it slipstreamed, and still have the Windows 7 installation ask what edition of Windows to install?

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up vote 3 down vote accepted

another option to find Windows 7 with SP1 ISOs, remove ei.cfg and then burn the DVDs...

here's a link FINAL Media Refresh MSDN Windows 7 Ultimate SP1_U x86/x64 ISO at MyDigitalLife to find ISOs and you can also verify SHA1 at Microsoft's Technet downloads: Technet Downloads

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+1. This is legal if and only if you have a legitimate serial number. You pay for the license, not the installation media. – cp2141 Aug 19 '11 at 23:22
+cp2141 or if you only try the trial – PsychoData Dec 12 '14 at 23:30

If you delete the ei.cfg file in the sources directory of the ISO/disc, it will prompt you to select which edition to install. The ei.cfg file specifies various things about the edition to install (e.g. volume licensing, OEM/retail distributions).

If this file is present on the disc, the installer assumes that is the edition to install. Without this file, the installer has no choice but to prompt the end-user to select the proper edition.

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That's what we did for SP0, but with SP1, we get a BSOD once setup starts – Canadian Luke Aug 8 '11 at 21:53
Probably should make sure the disk actually has everything in the first place. I personally use Windows AIK, from the horse's mouth. – surfasb Aug 9 '11 at 6:40
@Luke is this an MSDN SP1 ISO, or an SP0 updated to SP1? – Breakthrough Aug 9 '11 at 10:23
Originally, it was an OEM copy that we took out the ei.cfg file to make it generic. We tried to slipstream SP1 into that, and it failed – Canadian Luke Aug 9 '11 at 16:44

Another option would be to install windows, install the updates / programs you want universally -> and then just do a backup using the disk image utility built into windows 7.

Load a windows 7 boot disk into the computer needing the new o/s - and plug in an external HD with the backup. I think you have to click recover, from the repair screen - and locate the backup image on the external.

Being that you're a computer shop, I imagine you have several external HDs. I imagine this might fit on a dual-layer DVD / blu-ray / large USB if you have those as well.

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there are definitely compatibility issues, but it has worked 5/5 times i've done it this way. Slipstreaming is a pain in the arse... – Alex Waters Aug 9 '11 at 3:34
That’s not an ideal method because it leaves a lot of extraneous files and registry entires behind that would not be present in a fresh SP1 installation. – Synetech Aug 9 '11 at 5:49

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