why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX failed in windows 2000?

[Jack Yi]

hi,guys:
     I don't know if it is proper to ask such a question here. I'm sorry if
I break some rules.

why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX fail in windows 2000 and succeed in
windows xp and greater version?

or how can I get a disk(whatever,ATA,SCSI,USB )'s real size(including
additional sectors) in a easy way in windows 2000, just like there is such a
function,

__int 64GetDiskRealSize(HANDLE hDisk);

Could anybody help me?
Waiting for reply.
Thank you!

[Stefan Ginsberg]

http://msdn.microsoft.com/en-us/library/aa365171(VS.85).aspx
IOCTL_DISK_GET_DRIVE_GEOMETRY_EX

Minimum supported client   Windows XP
Minimum supported server   Windows Server 2003

Ever heard of MSDN? It is quite useful.

Date: Wed, 10 Dec 2008 22:17:21 +0800
From: [e-mail]
To: [e-mail]
Subject: [ros-dev] why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX failed in windows	2000?

hi,guys:
     I don't know if it is proper to ask such a question here. I'm sorry if I break some rules.

why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX fail in windows 2000 and succeed in windows xp and greater version?

or how can I get a disk(whatever,ATA,SCSI,USB )'s real size(including additional sectors) in a easy way in windows 2000, just like there is such a function,

__int 64GetDiskRealSize(HANDLE hDisk);

Could anybody help me?
Waiting for reply.
Thank you! 
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[Jack Yi]

I'm not asking a official document to tell me, hi dude,  Minimum supported
client of IOCTL_DISK_GET_DRIVE_GEOMETRY_EX is  Windows XP, it is not
supported by W2k, I asked the question here because I wanna to know the
fundamental "why".
Still thank you,friend!

[Stefan Ginsberg]

"I wanna to know the
fundamental "why"."

...because the IOCTL isn't implemented?

"or how can I get a disk(whatever,ATA,SCSI,USB )'s real size(including
additional sectors) in a easy way in windows 2000, just like there is such a
function,"

Sorry, I don't know.

Date: Wed, 10 Dec 2008 23:58:53 +0800
From: [e-mail]
To: [e-mail]
Subject: Re: [ros-dev] why IOCTL_DISK_GET_DRIVE_GEOMETRY_EX failed in	windows 2000?

I'm not asking a official document to tell me, hi dude,  Minimum supported client of IOCTL_DISK_GET_DRIVE_GEOMETRY_EX is  Windows XP, it is not supported by W2k, I asked the question here because I wanna to know the fundamental "why".

Still thank you,friend!
_________________________________________________________________
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[David Grimbichler]

Try to look at this tool, "dd for Windows" here :
http://www.chrysocome.net/dd

The source code is availabe (GPL). You can find in the HTML webpage this 
information about getting the "real" size :
> Using --size
>
> Traditionally when using dd, if you wanted to copy an entire device,

you did not specify a block count and dd would read until it reached the 
end of the device. If you tried to read past the end of the device, the 
data up to the end of the device would be returned and if you kept 
reading you would get an error message. Windows however does not always 
do this so --size will tell dd to figure out the size of the device and 
make sure it does not read past that point. This is important for USB 
sticks which stop working if you read past the end of them. This is not 
on by default because getting the correct size of the device is not 
always possible. Some devices also keep returning bogus data past the 
end of the device without returning a suitable error code

Hope this helps.
Sincerely,
TheProphet.
> I'm not asking a official document to tell me, hi dude,  Minimum 
> supported client of IOCTL_DISK_GET_DRIVE_GEOMETRY_EX is  Windows XP, 
> it is not supported by W2k, I asked the question here because I wanna 
> to know the fundamental "why".
> Still thank you,friend!
>
> Ros-dev mailing list
> [e-mail]
> http://www.reactos.org/mailman/listinfo/ros-dev

[KJK::Hyperion]

Jack Yi wrote:
> I'm not asking a official document to tell me, hi dude,  Minimum
> supported client of IOCTL_DISK_GET_DRIVE_GEOMETRY_EX is  Windows XP, it
> is not supported by W2k, I asked the question here because I wanna to
> know the fundamental "why".

Because Windows XP is not Windows 2000. Just like Windows 2000 doesn't
have themes but Windows XP does. Why?

The question is why you need IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, when
Windows 2000 implements IOCTL_DISK_GET_DRIVE_GEOMETRY, which is largely
identical except for (surprise surprise) features implemented in Windows XP

[KJK::Hyperion]

and you probably really want to use IOCTL_DISK_GET_DRIVE_GEOMETRY
instead, anyway