See which Windows editions are inside an ISO or install.wim — via Microsoft Learn

Commandlow riskNeeds adminWindows 11Windows 10

One ISO usually holds several editions (Home, Pro, Education and more), each stored as a numbered index in install.wim or install.esd. DISM lists them along with their version and size, so you know which index is which before you deploy or extract one.

Takes effect right away

The easy way

Mount the ISO and replace D: with its drive letter.
If the file is called install.esd instead of install.wim, use that name.
The second command shows details (version, architecture, languages) for one index.

Command

Run in an administrator Command Prompt / Terminal window.

Dism /Get-ImageInfo /ImageFile:D:\sources\install.wim
Dism /Get-ImageInfo /ImageFile:D:\sources\install.wim /Index:1

This only reads the image and changes nothing.

Sources

Take inventory of an image or component using DISM — by Microsoft Learn

Source reviewed: 2026-11-02
Link checked: 2026-11-02
Tested hands-on: Not by Oddbyte.Me

Oddbyte.Me hasn't tried this on every Windows build, so keep the undo handy.

dismisoinstall.wimeditionsindex

More in Setup & Install

Read the Windows product key stored in your PC's firmware — via Microsoft Learn

Commandlow riskAdmin

Most PCs that came with Windows have the key embedded in the UEFI firmware (OA3), and Windows activates from it automatically when you reinstall the same edition. One PowerShell line reads that key, for example to check which edition it belongs to.

Heads-up: the BypassNRO / ms-cxh local-account shortcuts are being removed — via Windows Insider Blog

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Typing OOBE\BypassNRO or start ms-cxh:localonly at the Shift+F10 prompt used to let you skip the Microsoft account during setup. Microsoft announced in October 2025 that it is removing these known mechanisms, so newer builds require internet and a Microsoft account to finish OOBE.

Heads-up: Microsoft no longer documents a registry key for unsupported PCs — via Microsoft Support

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Guides still pass around the MoSetup 'AllowUpgradesWithUnsupportedTPMOrCPU' registry value. Microsoft's current page about devices that don't meet the requirements has no registry method at all. It advises against installing Windows 11 on such PCs and warns they aren't guaranteed updates, including security updates.