what does partmgr.sys do?

NTFSD
1

I know parmgr.sys is a upper filter for disk class driver. Could any people
tell me what does it do?

2

Well, it manages the partitions on Windows- it is the partition manager.

Regards,

Ayush Gupta

AI Consulting

From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Daniel(Fan) Zhang
Sent: Tuesday, June 01, 2010 10:26 PM
To: Windows File Systems Devs Interest List
Subject: [ntfsd] what does partmgr.sys do?

I know parmgr.sys is a upper filter for disk class driver. Could any people
tell me what does it do?
— NTFSD is sponsored by OSR For our schedule of debugging and file system
seminars (including our new fs mini-filter seminar) visit:
http://www.osr.com/seminars To unsubscribe, visit the List Server section of
OSR Online at http://www.osronline.com/page.cfm?name=ListServer

3

>I know parmgr.sys is a upper filter for disk class driver. Could any people tell me what does it do?

Pre-Vista:

  • functional driver for the partition PDOs created by Disk/ClassPnP, reports the partitions to FtDisk.sys or DmIo.sys

Vista+:

  • PnP bus driver for the partition PDOs, executes IOCTL_GET/SET_DRIVE_LAYOUT(_EX), reports the partitions to VolMgr.sys

–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com