[ltp] PATA IDE 2nd HDD caddy for IBM T4x

Dick Summerfield linux-thinkpad@linux-thinkpad.org
Thu, 10 Nov 2011 14:03:29 +0100


Helmut,

At 18:41 09/11/2011, you wrote:

>That works. Perhaps with a little help.
>
>You should (or must) jumper the disk with a small jumper as "master".
>
>Then you can see the second disk in the setup menu, in the "boot"  
>submenu.

Thanks for your advice.
It triggered me to find out that the group of four, separate, unconnected pins are in fact the "jumper-pins" (my name)

I also found the following information with regard to the pins (http://www.av8n.com/computer/htm/disk-pinout.htm ):
===quote===
For laptops (44 pin connector) the master/slave jumper scheme given below seems
to be pretty common, although I wouldn’t be surprised to find others. Looking
at the pins, we have (v = pin 1):

                                              v
    . . . . . . . . . . . . . . . . . . . . . .   . .  device 0
    . . . . . . . . . . . . . . . . . . . . . .   . .  i.e. master

                                              v
    . . . . . . . . . . . . . . . . . . . . . .   . |  device 1
    . . . . . . . . . . . .   . . . . . . . . .   . |  i.e. slave

                                              v
    . . . . . . . . . . . . . . . . . . . . . .   . .  cable select
    . . . . . . . . . . . . . . . . . . . . . .   _ _

===end quote===

So, as I understand it, I should leave the disk already in the laptop as is - no jumpers = (disk 0 / master)
the disk in the new caddy should have the jumper vertically on the outermost pins = (disk 1/slave).
Is this the same as what you are saying?

Will anything be broken if I get it wrong or will it just not work?

--

Regards,

Dick.