#controller failure
01-Jul-94 18:20:46
Sb: #154734-#controller failure
Fm: Steven D. Kapplin 70055,1021
To: Gayle Lee Fairless 71571,321
Gayle,
I seems that some drives, even from the same mfgr., don't come up to
speed quickly enough. I feel studpid for not remembering this sooner. The
7120A doesn't power up until the bridgbeboard begins to boot up. That means the
drive doesn't come up to speed by the time the BB starts looking for the hard
drive controller, so the controller error pops up because as far as the BB is
concerned the controller isn't on line. In fact it isn't, but it soon will be.
Unfortunately, that's too late for the boot sequence. The two PCResets
actually force a wait on the BB so the boot sequence is delayed just long
enough for the drive to come up to speed. My Maxtor 240, on the other hand,
powers up as soon as the computer ist turned on.
Although I have never tried this with that drive, note that jumper J11
is labeled I/O channel Ready. It is defaulted to OFF. You might try putting a
jumper on J11, which turns the I/O channel ON. That may cause the drive to
power up earlier and not have to wait until the BB boots. You will be able to
tell easily. With the drive exposed to where you can hear it, note that
normally the drive will turn on when the BB starts up. You will hear the motor
start to come up to speed. If you jumper J11 and the drive comes on immediately
after the computer is turned on, then you may not need the PCResets to insert
the delays.
Steve