335 Series SSD appears in Windows but not in Toolbox

[CKrus]

I'm trying to 'erase' an SSD using the Intel SSD Toolbox software (to prep it for sale). I'm using a Windows 8 VM via Virtualbox on my 2013 iMac to access the appropriate utilities in the Toolbox software. The drive appears in Windows just fine (My Computer, Disk Management, etc) and I can write files to it. However, it does not appear in the Intel Toolbox software. Any ideas?

A few additional details in case they help:

1) I'm using a Thermaltake Blacx (usb 2.0?) dock. Dock and cables work fine (tested on multiple machines).

2) Windows wouldn't recognize the Mac OS Journaled formatted drive, so I reformatted to NTFS to get Windows to recognize it

3) The Windows 8 VM is the "Modern IE" developer version used by us front-end developer types to cross-browser test

I have access to some older Windows boxes via family members (albeit not immediate access), but since the VM allowed Windows to read/write to the drive, I'm assuming it's a quirk with the Toolbox software itself and not the VM setup?

Thanks in advance!

[CKrus]

It was connected via an external dock/usb

[Silvia_L_Intel1]

I'm afraid to tell you that Toolbox cannot communicate with drives connected via USB.

[CKrus]

Bummer. Appreciate the clarification.

If you have any recommendations on how to go about secure erasing Intel SSDs via USB I'm all ears.

[DGond]

Have you tried Parted Magic?

[CKrus]

Appreciate the suggestion mutex7. Haven't tried it (yet) but will certainly dig in more. I saw that gParted might be a free alternative. If you have any experience using it vs Parted Magic you'd save me some Googling