IOCTL 0x4D0004

NTDEV
1

Hi , could somebody tell me what does this IOCTL mean? I can’t find it
out anywhere . Thanks in advance.

2

0x4d == 77 = ‘M’

This is some of IOCTL_MOUNTDEV_xxx

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

“yushang” wrote in message news:xxxxx@ntdev…
> Hi , could somebody tell me what does this IOCTL mean? I can’t find it
> out anywhere . Thanks in advance.
>

3

Look up the definition of CTL_CODES in WinIoCtl.h.

OR, there is a nifty utility on OSRONLINE.com that will “translate” known IOCTLs, when OsrOnline is on line, which it hasn’t been for about two days now.

Gary G. Little

----- Original Message -----
From: “yushang”
To: “Windows System Software Devs Interest List”
Sent: Sunday, December 26, 2010 10:40:32 PM
Subject: [ntdev] IOCTL 0x4D0004

Hi , could somebody tell me what does this IOCTL mean? I can’t find it
out anywhere . Thanks in advance.

—
NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars 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

4

>there is a nifty utility on OSRONLINE.com that will “translate” known

IOCTLs, when OsrOnline is on line, which it hasn’t been for about >two days
now.

We should be back now:

http://www.osronline.com/article.cfm?article=229

Though we don’t have specific handling for the mountdev device type, put it
on the list to be added.

-scott

–
Scott Noone
Consulting Associate
OSR Open Systems Resources, Inc.
http://www.osronline.com

Hope to see you at the next OSR kernel debugging class February 14th in
Columbia, MD!

“Gary G. Little” wrote in message
news:xxxxx@ntdev…
Look up the definition of CTL_CODES in WinIoCtl.h.

OR, there is a nifty utility on OSRONLINE.com that will “translate” known
IOCTLs, when OsrOnline is on line, which it hasn’t been for about two days
now.

Gary G. Little

----- Original Message -----
From: “yushang”
To: “Windows System Software Devs Interest List”
Sent: Sunday, December 26, 2010 10:40:32 PM
Subject: [ntdev] IOCTL 0x4D0004

Hi , could somebody tell me what does this IOCTL mean? I can’t find it
out anywhere . Thanks in advance.

—
NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars 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

5

Could we please have that this came about in? Are you getting this from another driver?

6

IOCTL_MOUNTDEV_UNIQUE_ID_CHANGE_NOTIFY

Cheers
Check Abdoul

“yushang” wrote in message news:xxxxx@ntdev…
> Hi , could somebody tell me what does this IOCTL mean? I can’t find it
> out anywhere . Thanks in advance.
>