Weird IOCTL code

NTDEV
1

Anyone know what IOCTL this is?

0x90DAE040

Or more specifically…what device code is 0xDA?

I know this has something to do with CD/DVD writing…but not sure what.

Thanks.

Bill M.

2

Hello, Bill -

The device code is 0x90DA, actually, which means the common bit is set. i.e., it’s for a non-Windows-standards device.

Having said that, I have no idea what device this is referring to.

-Steve

3

There is also a 0x90DC device.

These are both CD/DVD writing IOCTLs, but I would love to know where they
are defined.

Bill M.

wrote in message news:xxxxx@ntdev…
> Hello, Bill -
>
> The device code is 0x90DA, actually, which means the common bit is set.
> i.e., it’s for a non-Windows-standards device.
>
> Having said that, I have no idea what device this is referring to.
>
> -Steve
>