WinPE Setup follows these rules for selecting which edition to install:
No Unattended file
1. When there is no unattended file, Setup will offer to install whatever ISO editions match the same version as the OEM product key in the BIOS. Home Edition for Home, Pro Edition for Pro. If there is no OEM product key found, all editions are eligible for install.
2. If there are multiple editions matching the OEM key, you will be allowed to select which matching edition to install. If there is only one match, Windows will automatically install that edition.
Unattended file without Product Key
1. If your unattended file selects a specific image number or name to install, that image is installed regardless of the OEM key. Some users may want to install Pro on a system that shipped with a Home OEM key.
2. If your unattended file doesn't select a specific image (under Unattended mode, check the "Prompt edition selection" box in the Toolbar), Setup will use the OEM key to select the matching editions.
If there are multiple editions matching the OEM key, you will be allowed to select which matching edition to install. If there is only one match, Windows will automatically install that edition.
Unattended file with Product Key
1. If your unattended file selects a specific image number or name to install, that image is installed regardless of the Product key.
2. If your unattended file doesn't select a specific image (under Unattended mode, check the "Prompt edition selection" box in the Toolbar), Setup will use the Product key to select the matching editions.. This Product Key may be a generic Windows install key (Home, Pro, EDU, Enterprise) or a specific activation key.
If there are multiple images that match the Product Key, you will be allowed to select which matching edition to install. If there is only one match, Windows will automatically install that edition.
Setup rules ranked in order of importance:
1. Specific image number or name in Unattended file
2. Product Key if provided in Unattended file
3. OEM Product key if found in BIOS