Try IOCTL_STORAGE_QUERY_PROPERTY if the IOCTL_SCSI_GET_CAPABILITIES fails.
First question is can you do pass through at all?

--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
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"Ján Vongrej" <congo@imafexbb.sk> wrote in message
news:%239heh9QRGHA.5900@tk2msftngp13.phx.gbl...

Hi,
For example on that drive the IOCTL_DISK_GET_DRIVE_GEOMETRY was working.
Right now i'm not by that server PC. Will be on monday. But today i wanted
only to ask, that how it can be possible that that code works on win2k and
XP but on win 2003 does not ?. If is there som explanation that it has to
be written esle than for previous versions of Windows, or is there just some
security issue which has to be set off to work with the SCSI device or
driver is bad or etc.... Because if a can remember more of the SCSI macros
failed (not sure if pass thruogh ws working) when i was testing but this
only i mentioned i really need ;D
Because i need informations from the structure.


"Don Burn" <burn@acm.org> wrote in message
news:egqlzTRRGHA.4264@TK2MSFTNGP11.phx.gbl...