Before installing Windows, it is useful to verify the edition, version, and build number of the ISO file. This ensures you know exactly which system you are setting up.
Step 1: Mount the ISO File
- Double-click or right-click the Windows ISO file to mount it.
- The system will assign it a drive letter (for example, F).
Step 2: Locate the Install File
- Navigate to the mounted ISO drive (e.g., F).
- Open the sources folder.
- Look for either install.wim or install.esd.
Step 3: Open an Elevated Command Window
- Right-click the Start button.
- Select Command Prompt (Admin), PowerShell (Admin), or Terminal (Admin).
Step 4: Run DISM Commands
If the ISO contains install.esd:
To list available editions:
DISM /get-wiminfo /wimfile:"F:\sources\install.esd"
(Replace F with the mounted drive letter.)
To check a specific edition:
DISM /get-wiminfo /wimfile:"F:\sources\install.esd" /Index:6
(Replace F with the drive letter and 6 with the edition index number.)
If the ISO contains install.wim:
To list available editions:
DISM /get-wiminfo /wimfile:"F:\sources\install.wim"
To check a specific edition:
DISM /get-wiminfo /wimfile:"F:\sources\install.wim" /Index:6
(Replace F with the drive letter and 6 with the edition index number.)
Step 5: Understand WIM vs. ESD
WIM (Windows Imaging Format):
- Uncompressed or minimally compressed.
- Larger file size but easier to modify.
ESD (Electronic Software Distribution):
- Highly compressed using LZMS compression.
- Smaller file size, optimized for efficiency and speed.
Note: ISOs downloaded directly from Microsoft usually contain install.wim, while those created with the Media Creation Tool typically include install.esd.
By checking the edition, version, and build number of a Windows ISO file, you ensure that your installation matches your system requirements. This simple verification step helps avoid surprises during setup and keeps your workflow efficient.