IRP_MN_MOUNT_VOLUME: fixed vs. removable

NTFSD
1

Hi,

Could anybody prompt me how I can determine in the dispatch routine
for mount volume IRP whether this request is for fixed or removable disk?

Thanks in advance.

With best regards,
Leonid.

2

Leonid:

First thing you can look at is
Vpb->DeviceObject->Characteristics&FILE_REMOVABLE_MEDIA
Second thing, you can send
IRP_MJ_DEVICE_CONTROL(IOCTL_DISK_GET_DRIVE_GEOMETRY)
to Vpb->DeviceObject and check returned DISK_GEOMETRY.MediaType for
RemovableMedia
or FixedMedia.
My guess would be that IOCTL is more precise way to determine that.

Regards,

Vladimir

-----Original Message-----
From: Leonid Zhigunov [mailto:xxxxx@progate.spb.ru]
Sent: Tuesday, May 14, 2002 3:21 AM
To: File Systems Developers
Subject: [ntfsd] IRP_MN_MOUNT_VOLUME: fixed vs. removable

Hi,

Could anybody prompt me how I can determine in the dispatch routine
for mount volume IRP whether this request is for fixed or removable disk?

Thanks in advance.

With best regards,
Leonid.

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3

RE: [ntfsd] IRP_MN_MOUNT_VOLUME: fixed vs. removableThank you, Vladimir.

This is the way I thought. I have also found in ddk sources, that
corresponding drivers
return the information in DISK_GEOMETRY::MediaType based on its device
object
characteristics. So, it is better just to check
Vpb->RealDevice->Characteristics field
instead of issuing IRP_MJ_DEVICE_CONTROL.

Regards,
Leonid.

“Chtchetkine, Vladimir” wrote in message
news:xxxxx@ntfsd…
Leonid:
First thing you can look at is
Vpb->DeviceObject->Characteristics&FILE_REMOVABLE_MEDIA
Second thing, you can send
IRP_MJ_DEVICE_CONTROL(IOCTL_DISK_GET_DRIVE_GEOMETRY)
to Vpb->DeviceObject and check returned DISK_GEOMETRY.MediaType for
RemovableMedia
or FixedMedia.
My guess would be that IOCTL is more precise way to determine that.
Regards,
Vladimir

-----Original Message-----
From: Leonid Zhigunov [mailto:xxxxx@progate.spb.ru]
Sent: Tuesday, May 14, 2002 3:21 AM
To: File Systems Developers
Subject: [ntfsd] IRP_MN_MOUNT_VOLUME: fixed vs. removable

Hi,
Could anybody prompt me how I can determine in the dispatch routine
for mount volume IRP whether this request is for fixed or removable disk?
Thanks in advance.
With best regards,
Leonid.

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