Why can't I receive the message of volume uninstallation

Panel · September 10, 2024, 8:21am

Hi,All!
I set up a volume uninstallation callback routine in Minifilter, but I used some tools to uninstall the volume and then found that the uninstallation of the volume never entered the uninstallation callback routine.Can a driver development expert explain？

Scott_Noone_OSR · September 23, 2024, 1:59pm

I don't know what a "volume uninstallation callback" is...You need to be more specific.

Panel · September 25, 2024, 7:21am

sorry,Scott. IRP_MJ_VOLUME_DISMOUNT in Minifilter.

Scott_Noone_OSR · September 27, 2024, 5:01pm

Hm, never tried to use that one and it kind of looks to me to not be implemented...

You should see an IRP_MJ_FILE_SYSTEM_CONTROL/FSCTL_DISMOUNT_VOLUME though