According to the documentation the following command zeros out free sectors and then shrinks the disk:
VMwareToolboxCmd.exe disk shrink c:\
However, after zeroing out the C: drive, VMware Workstation then shrinks all disks. My VM has two disks: Disk-0.vmdk is the C: drive and Disk-1.vmdk is the data drive. This was displayed:
![SkR85bF[1].png](/t5/image/serverpage/image-id/16350i67E7BC6BFAED23B0/image-size/large?v=v2&px=999 "SkR85bF[1].png")
Disk-1 is the data disk... fortunately, it does look like you can cancel the shrink operation for the accidental drive (Disk-1 is huge and would take hours to shrink) and it will move onto the next drive:
![8DdRE37[1].png](/t5/image/serverpage/image-id/16357i2F92CEF2F4EA29E8/image-size/large?v=v2&px=999 "8DdRE37[1].png")
There is a disk shrinkonly option which shrinks all drives but IMO this is a bug. It should have only shrunk the drive associated with the C: drive. You also get an error message which I assume is the result of me cancelling the shrink of Disk-1:
![tkQwijZ[1].png](/t5/image/serverpage/image-id/16358iD5F759CCE9D203D7/image-size/large?v=v2&px=999 "tkQwijZ[1].png")