I had an annoying problem when I replaced my 8TB target disk with new one and couldn't anymore accelerate it... After a few days tinkering I found a fix for my problem. This is a workaround to fix unknown error (0xa0040002), that can happen when trying to re-enable caching for the new drive.
1st: return SSD back to normal use
2nd: Go to windows storage manager and format disk to be regular disk GPT or MBR primary partition
3rd: Delete Partition
4th: Re-enable SSD caching via Rapid Storage Technology Interface
5th: Your problem should be fixed now.
Confirmed to work with 2nd gen Intel Core processor with Z77 chipset board using RST version 15.9
Message was edited by: markku hyttinen Added error code