Macintosh IIfx: Problems Getting Internal Hard Drives to Start


Article Change History
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11/04/92 - UPDATED
* To explain that there is a small power trace difference on the
Macintosh II and Macintosh IIfx logic boards.

My internal hard drive stopped working after upgrading my Macintosh II
to a Macintosh IIfx. The drive just clicks and won't spin up.

I've been told by the drive's manufacturer that this is because the
power trace on the Macintosh IIfx motherboard is half the size of the same
power trace on the Macintosh II. Is this correct?

There is small difference in the power trace from the Macintosh II to
the Macintosh IIfx. However, the difference would be within the
limits of the power draw specifications that we require drive
manufactures to meet.

If your particular drive is drawing more than Apple allows, you'll need
to swap drives for one that does not require so much power to spin up.


Published Date: Feb 18, 2012