> On Nov 14, 2017, at 8:44 PM, David Schwartz <[email protected]> wrote: > > On Nov 14, 2017, at 1:58 PM, Carl Hoefs <[email protected]> > wrote: >> >> The Seagate HDD I replaced was not the original one that came with the iMac, >> but was the one it had been running fine with for the last few years. So the >> new HDD of the same type should be a plug-in replacement without issues. > > Beginning with the 2010 iMac, Apple started pulling drive temperature data > from the SATA pins of the OEM drives. After market drives usually didn't > provide the same pin-out information, even when they were the same > make/model. The usual indication of this was the fans racing, but even when > that didn't happen the drives wouldn't pass Hardware Test. It's not > unreasonable to suspect if you have an after-market HD in a Mid 2011 iMac > without an Inline Thermal Adapter, the High Sierra update might choke. I know > for a fact it runs fine on that same vintage machine with stock drives, after > market SSD drives w/thermal sensor in 3.5" SATA slot, and after market SSD > drives in backside SATA slot (which doesn't expect to get temp data). > > $35 might be money well spent to keep this machine happy.
Wow, thanks for your insights. I would have never thought of something like an Inline Thermal Adapter being needed. Thanks for giving me something to go on! -Carl _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
