attach to partitions in Windows 2000

NTDEV
1

Hi,

How do I attach a filter driver to partitions in Windows 2000?
It looks like W2k uses ftdisk and dmio as drivers for partitions/volumes.

So if I wanted to attach to all partitions/volumes I would have to attach
an upper filter to both ftdisk and dmio??

If I add an upper filter to ftdisk and/or dmio I would get an AddDevice for
every partition created on the disk so I can attach the Windows 2000 way?

In NT 4 an upper filter can attach to the disk class driver and then
partition device objects can be attached using \Device\HarddiskX object
pointers.

Thanks

Mike

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2

> How do I attach a filter driver to partitions in Windows 2000?

It looks like W2k uses ftdisk and dmio as drivers for partitions/volumes.

So if I wanted to attach to all partitions/volumes I would have to attach
an upper filter to both ftdisk and dmio??

Intercept the mount path of the filesystem (you need an FS filter for this)
and attach your device object directly above the Vpb->RealDevice.
This works. Surely, it will support both FtDisk and dmio.

Max

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