RE: Trying again: Question concerning Tiger->Leopard changes for unformatted BSD disk device.
RE: Trying again: Question concerning Tiger->Leopard changes for unformatted BSD disk device.
- Subject: RE: Trying again: Question concerning Tiger->Leopard changes for unformatted BSD disk device.
- From: email@hidden
- Date: Thu, 8 May 2008 13:51:22 -0400
- Importance: Normal
|
Thanks, Chris. for the diagnosis. I've sniffed
the USB connection, and the first Mode Sense command (the 10 byte one) is
responded to with a stall and then the 6 byte one is responded to with data
(along with a "good" CSW). I've looked at the
IOSCSIArchitectureModelFamily source (the latest available one is from
10.3.9, right?), and I see that the routine is looking at the either the fourth
byte--offset 3 (for the 10 byte command reponse) or the third byte --
offset 2 (for the six byte command reponse), for the high-order bit for the
write-protect status (and honestly, I don't see that the bit is on in the
data). Can I assume the 10.5 version is similar, or was there
some big change at 10.5? I've looked on the web (like in the USB Bulk-only
Transport spec, for instance), but haven't found much information on the format
of the "mode pages" or whatever the response to the mode sense command(s) are
called. Can you suggest some documenation on this topic so I
can advise the device vendor on how to fix this? Thanks
again.
>> ------------------
>> 6 Infinite Loop
>> M/S 306-2MS
>> Cupertino CA 95014
>> phone: (408) 974-4033
>> fax: (408) 862-7577
>> email: email@hidden
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