On Thu, 6 Jul 2006, Foli Ayivoh wrote:

> Hi Alan,
> 
> I could not find "boot device" related stuff in the thread!?

What?  You mentioned it in the very first email message of this thread.  
In http://marc.theaimsgroup.com/?l=linux-kernel&m=115143262828836&w=2
you wrote:

        Two issues on USB:

        First:
        USB-HDD boot device hangs

That's where "boot device" related stuff first appeared in this thread.

> Could the value of "Interface Descriptor: bInterfaceSubClass"
> or "Interface Descriptor: bInterfaceProtocol" that might differes
> between _boot_device_ and _not_boot_device_

No.  That refers to something entirely different.

> This is from my keyboard:
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         3 Human Interface Devices
>       bInterfaceSubClass      1 Boot Interface Subclass
>       bInterfaceProtocol      2 Mouse
>       iInterface              0

The "Boot Interface Subclass" means that the BIOS will be able to use the 
keyboard at boot time, even before you have loaded an operating system.

> Oh, just forget what I ask right now :-(  I just get a hang on the 
> usb-storage-device _not_ connected as boot-device
> 
> 
> btw. what is -104
> cce35c60 3670790155 C Bi:006:06 -104 0

-104 means that the request was cancelled by the computer.  Probably
because the device took too long to respond.

Alan Stern


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