Strange hd mount point with acronis

Hi guys I was checking my C: drive with the command chkdsk C: /f and after restarting the laptop I get at the end of the cheking an error that was automatically repaired. Since then when I am using Acronis disk director suite v.10 the mount point for C: in acronis reads:

\\?\Volume{7c740948-0515-11de-b0df-806d6172696f}

and any other external HD as the same string. Is it ok? and why before running the chkdsk was showing NO mount point?

thanks