As you may know securely erasing SSD’s is not the same as traditional rotating hard drives; largely due to TRIM, reserve cell, and a few other technologies. Thus traditional tools will not work. Many people are using tools made for SSD’s that write “0’s” on all of the drive. Parted Magic being one of the most talked about.
Beyond that, each drive manufacture makes utility software for their drive, one of the drive features is to basically shock each cell on the drive making it blank. The key being, EACH manufacturer. To make matters worse, some of these are OEM’ed, so the support changes. Microsoft Surface and Lenovo use Samsung drives, however the Samsung tools do not work, and Samsung offers no support.
Microsoft does have a tool for the Surface. I downloaded it, built a bootable USB drive, and tried it on a busted one, however I don’t know what it is doing since the screen is shot, and the external display only works in Windows.
FWIW there are other Surface Pro specific tools: