Indicates whether you want to save software files that are being replaced during installation.
YES instructs the system to save previous versions of software that is being replaced. In case of a failed installation, choosing YES allows the cleanup procedure to restore the previous version of the software. If you chose NO for "COMMIT software?", then you must choose YES to "SAVE replaced files?". Choosing YES will require some additional space to save replaced files. Choosing YES also requires more installation time because of the extra processing for saving files.
NO instructs the system NOT to save previous versions of software while it is being replaced. In case of a failed installation, the previous version of the software CANNOT be restored and is marked BROKEN. You must reinstall the software update if this occurs.