Re: Problems supporting multiple LUNs on mass storage device

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From: Peter Wieland [MSFT] (peterwie_at_online.microsoft.com)
Date: 03/31/04 

Date: Wed, 31 Mar 2004 08:34:19 -0800

Oleg,

Are you writing a miniport driver? Or are you writing a component that
replaces the combination of scsiport/miniport?

Could you explain better what you mean by "class request 0xfe"? This isn't
a SCSI-2 opcode so i'm not sure what command you're actually talking about.

Given that you're returning a serial number "string in the device
descriptor" i'm guessing that you're trying to write a port driver. If
that's the case, you need to expose each LUN as a separate device object.
If not you'll need to explain a little more what you're doing now so we can
determine if it should be working or if you should be doing something
different.

-p

"OlegM" <dworkin_om@hotmail.com> wrote in message
news:f094123a.0403310527.16bbbb8f@posting.google.com...
> Hi all !
>
> I am writing a driver for a mass storage device and I encounter a
> problem with supporting more than one LUN . I answer to the class
> request 0xFE with one byte answer of 1 ( to support two LUNs ) and I
> send a seemingly valid SN string in the device descriptor . Still the
> Windows ( both XP and 2K SP4 ) enumerates only LUN0 .
>
> Can someone , please , guide me where to look for the problem ?
>
> 10x a lot
> Oleg

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