>I finally got our 68 to 50 pin drive working properly last night. We
>installed it in our UMAX c600. (moving another SCSI drive over to the
>9600)
>
>Did you look on IBM's web site for a chart of the jumper settings on
>your drive? They seem to have every drive they ever made listed. They
>also seem to be fairly consistent in the order of their jumper pins - if
>you need to guess.
>
>Our drive can not be used as the start up drive, as it is slow spinning
>up. The system always finds a System Folder on the other drive first.
>(it gets tired of waiting on the IBM to wake up) I guess we could play
>with the start up time on other drive, but why slow everything down for
>a storage drive? It can be used as the start up disk from a reboot.
>
>We got our drive working by doing the following: It is at the end of
>the SCSI cable and is set to SCSI ID 0 (on a combo internal/external
>SCSI bus). Jumpered: Enable Active Termination, Autostart Delay and
>Disable Unit Attention.
>
>For what it is worth our pins are as follows:
>(Solid side of the drive up - lumpy side down - reading left to right)
>1 - 3 - 5 - 7 - blank - 11 - 13 - 15 - 17 - 19 - 21- 23 - 25 - 27 - 29 -
>31
>2 - 4 - 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 24 - 26 - 28 -
>30 - 32
>
>Pins pairs 1 through 8 are for SCSI address
>ID 0 is no pins - ID 1 is pins 7 & 8 - ID 2 is pins 5 & 6
>
>Enable Active Termination is pins 13 & 14
>Autostart Delay is pins 21 & 22
>Disable Unit Attention is pins 29 & 30
>
>If AutoStart happens to work on your drive it is pins 11 & 12
>
>Other items IBM suggested trying are:
>Disable Sync Negotiations - pins 25 & 26
>Disable Wide Negotiations - pins 31 & 32
>
>They recommended against jumpering Termination Power Enabled, which may
>or may not be on your drive. If it is, it is two pins by themselves on
>the far right.
>
>We played with just about every combination of settings.
>
>Good Luck!
>Nancy
>
Hi again,
Thanks for that info - hopefully, it will not be too mucyh trouble
now - I did check IBM's pages & downloaded the PDFs, but I didn't find them
clear to understand. I'll see how I go.
Bye for now, Terry Allen
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