USB Mass Storage

USB Mass Storage

[SN]

If I use a USB connected hard-disk (IDE), which device driver would I
be using? I understand it is recognized as a SCSI disk. So, is it the
SCSI driver? Or would the IDE driver be used?

Thanks!

Re: USB Mass Storage

[Carlos Martin]

On 5/12/05, SN <talk2sumit@gmail.com> wrote:
> If I use a USB connected hard-disk (IDE), which device driver would I
> be using? I understand it is recognized as a SCSI disk. So, is it the
> SCSI driver? Or would the IDE driver be used?

 You would use the usb-storage driver which in turn uses the scsi driver.

   cmn
-- 
Carlos Martín         http://www.cmartin.tk   http://rpgscript.berlios.de

"I'll wager it's the most extraordinary thing to happen round here
since Queen Elizabeth's handmaid got hit by lightning and sprouted a
beard"
     -- T. C. Boyle, "Water Music"

Re: USB Mass Storage

[SN]

Thanks for the reply Carlos and Eshwar.

So is it that IDE (ide-disk.c) doesn't even come into the picture?
>From where exactly is the data sent to the disk? I mean, where in
kernel would I find code for read/write on disk?

Thanks in advance.

Regards..

On 5/12/05, Carlos Martin <carlosmn@gmail.com> wrote:
> On 5/12/05, SN <talk2sumit@gmail.com> wrote:
> > If I use a USB connected hard-disk (IDE), which device driver would I
> > be using? I understand it is recognized as a SCSI disk. So, is it the
> > SCSI driver? Or would the IDE driver be used?
> 
>  You would use the usb-storage driver which in turn uses the scsi driver.
> 
>    cmn
> --
> Carlos Martín         http://www.cmartin.tk   http://rpgscript.berlios.de
> 
> "I'll wager it's the most extraordinary thing to happen round here
> since Queen Elizabeth's handmaid got hit by lightning and sprouted a
> beard"
>      -- T. C. Boyle, "Water Music"
>

Re: USB Mass Storage

[Douglas McNaught]

SN <talk2sumit@gmail.com> writes:

> If I use a USB connected hard-disk (IDE), which device driver would I
> be using? I understand it is recognized as a SCSI disk. So, is it the
> SCSI driver? Or would the IDE driver be used?

It would be the SCSI layer running on top of the USB drivers.  No IDE
involved on the PC side (obviously the USB enclosure has an IDE
controller, but it's driven by the enclsure firmware, not Linux).

-Doug