Unable to Exclude a complete drive

I recently changed my Desktop PC's SATA HDD to an SSD (cloned OK with Acronis True Image 2016) and kept the old SATA as a disk for quick access. (Disk 0 is my working drive and Disk 1 the SATA). Unfortunately I can find no way to exclude the SATA (Disk 1) from being included in the Single Version Scheme back up.
I have tried the syntax W:\. and W: without success and, short of changing the backup scheme to a folders version and excluding each separate folder on Drive 1, I cannot get Acronis to work and as my backup disk is only slightly larger in total capacity than Disk 0, it obviously fails when attempting to backup both hard drives.
Short of obtaining a much larger backup disk or unmounting Disk 1 Is Acronis capable of excluding a complete drive?
Thank you.

Acronis Links : Acronis Scheduler Manager : Acronis VSS Doctor : Backup Archive Compatibility : Cleanup Tool (ATIH 2010-2021) : Cloning Disks : Contact Acronis Support : Difference between Backup and Disk Clone
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