Why can’t you install Adobe Photoshop CS4 on flash-based storage devices?
Does that mean you can’t install Adobe Photoshop CS4 on a solid state drive or do they only mean external flash-based storage devices?
They only mean external storage devices.
The reason is because typically, when installed, some applications need to be able to write to the Windows registry or store its configuration files (such as an INI file) in the user’s profile. This cannot be done in external storage devices such as USB flash drive. Photoshop is one of those applications that write to the registry and store a lot of configuration files on your profile.
This is also what separate the portable applications from them. Portable apps are software programs that are able to run independently without the need to install files to the system it is running in.



They only mean external storage devices.
The reason is because typically, when installed, some applications need to be able to write to the Windows registry or store its configuration files (such as an INI file) in the user’s profile. This cannot be done in external storage devices such as USB flash drive. Photoshop is one of those applications that write to the registry and store a lot of configuration files on your profile.
This is also what separate the portable applications from them. Portable apps are software programs that are able to run independently without the need to install files to the system it is running in.
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