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Apple Computing Products:
macOS - Desktop Hardware
27" Imac Temperature Sensor?
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<blockquote data-quote="chscag" data-source="post: 1742629" data-attributes="member: 46727"><p>Welcome to our forums.</p><p></p><p>Your 2011 iMac has three fans running all the time: CPU, Hard Drive, and Optical Drive. A temperature sensor controls the speed of the particular fan. Before doing anything else, you should make sure you have a good backup of all your data. Use Time Machine or cloning software such as Carbon Copy Cloner. Next, download a monitoring program that reads the temperatures and speeds of the fans plus other things. Most of us recommend <a href="https://bjango.com/mac/istatmenus/" target="_blank">iStat Menus</a>. Keep an eye on things and keep up with backups. Instead of booting to Single User Mode, next time boot to Recovery (command plus r) and use Disk Utility First Aid from utilities to check your hard drive which is now 5 years old. You didn't mention which version of OS X you're running?</p></blockquote><p></p>
[QUOTE="chscag, post: 1742629, member: 46727"] Welcome to our forums. Your 2011 iMac has three fans running all the time: CPU, Hard Drive, and Optical Drive. A temperature sensor controls the speed of the particular fan. Before doing anything else, you should make sure you have a good backup of all your data. Use Time Machine or cloning software such as Carbon Copy Cloner. Next, download a monitoring program that reads the temperatures and speeds of the fans plus other things. Most of us recommend [URL="https://bjango.com/mac/istatmenus/"]iStat Menus[/URL]. Keep an eye on things and keep up with backups. Instead of booting to Single User Mode, next time boot to Recovery (command plus r) and use Disk Utility First Aid from utilities to check your hard drive which is now 5 years old. You didn't mention which version of OS X you're running? [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
27" Imac Temperature Sensor?
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