When you install a Windows 7 edition other than Enterprise and Ultimate, after OOBE/Windows welcome you can only have one language pack installed. However, you can install multiple language packs into the installation package prior to deployment and OOBE, and have the user choose the language of their choice during setup.
When installing Windows 7 from such an image, the following error event may be logged to the system event log during setup.
Source: Microsoft-Windows-LanguagePackSetup
Event ID: 1018
Task Category: Installing language pack
Level: Error
Description:
CBS failed to install the language pack for zh-TW. Returned CBS error code
0x800f0842.
In this scenario, operations that make system configuration changes such as Windows Update may fail, and Windows may fail to start.
When installing Windows 7 from such an image, the following error event may be logged to the system event log during setup.
Source: Microsoft-Windows-LanguagePackSetup
Event ID: 1018
Task Category: Installing language pack
Level: Error
Description:
CBS failed to install the language pack for zh-TW. Returned CBS error code
0x800f0842.
In this scenario, operations that make system configuration changes such as Windows Update may fail, and Windows may fail to start.