WIN10 define my E: as system during image backup procedure

[Oscar S Wong]

Can somebody just help me??
its ridiculous that i think i never installed a OS in my partition E (i had a system partition on the similar disk but deleted, now the OS is installed on other SSD)
i don't know why that WIN10 see my E: as the system part.... i don't want to backup it, it has a lot of data (5xx GB)
Who can tell that how to uncheck the option of E: during image backup on WIN10?

Thanks.:unhappysweat::unhappysweat::unhappysweat: