iMac 21.5-inch, Mid 2010, Processor 3.06 GHz Intel Core i3, Memory 12 GB 1333 MHz DDR3,
Graphics ATI Radeon HD 4670 256 MB,
Software OS X 10.8.4 (12E55) for the 4th or 5th time has made an alarming sound, then freezes up?
What has caused this? Why?
iMac (21.5-inch Mid 2010), OS X Mountain Lion (10.8.3)
An alarming sound similar to a fire alarm in a commercial building.
I have heard of all sorts of building fire alarm sounds including horns, bells, sirens, and buzzers. None of them should come from your Mac, but I understand some hard disk drive manufacturers include an audio transducer to indicate a S.M.A.R.T status alert. Perhaps it is that. Running Disk Utility or Apple Hardware Test should confirm that suspicion.
I'll record the sound(tuut, tuut, tuut) the next time it happens. I ran the Disk Utility and everthing appears fine and disk is intact. Just wonder why it would freeze up, and then I have to hard boot to get it up and running again. Thanks again.
iMac 21.5-inch,
