Windows System Software -- Consulting, Training, Development -- Unique Expertise, Guaranteed Results

Before Posting...
Please check out the Community Guidelines in the Announcements and Administration Category.

More Info on Driver Writing and Debugging

The free OSR Learning Library has more than 50 articles on a wide variety of topics about writing and debugging device drivers and Minifilters. From introductory level to advanced. All the articles have been recently reviewed and updated, and are written using the clear and definitive style you've come to expect from OSR over the years.

Check out The OSR Learning Library at:


Patrick_StrattonPatrick_Stratton Member - All Emails Posts: 1
Hi all,

Diskpart calls it a “Volume Type” and the Disk Management snap-in calls it a “Volume Layout.” The VDS (‘superseded’ in Win8) indicates that this property is provided by VDS Hardware/Software Providers. Sure enough, so far I’ve only found references to it in VDS documentation (VDS_VOLUME_TYPE: VDS_VT_SIMPLE/SPAN/STRIPE/MIRROR/PARITY). Looking further I haven’t found any structures that allow a device to respond to an IOCTL supplying this information and there are no CM or Volume API that jump out at me where this is exposed to user-mode callers.

Question for those that have supplied this hint/property before – does everyone create a VDS Provider (even though it’s ‘superseded’) to expose this property or do you expose it a different way and let whatever user-mode API retrieve it from there? In other words, is this a configuration that devices store in the registry, on disk, or does it *have* to be registered through VDS (again, even though it’s been labeled as superseded).

Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Upcoming OSR Seminars
OSR has suspended in-person seminars due to the Covid-19 outbreak. But, don't miss your training! Attend via the internet instead!
Kernel Debugging 30 Mar 2020 OSR Seminar Space
Developing Minifilters 15 Jun 2020 LIVE ONLINE
Writing WDF Drivers 22 June 2020 LIVE ONLINE
Internals & Software Drivers 28 Sept 2020 Dulles, VA