- #Hdd fan control mac replacement install#
- #Hdd fan control mac replacement pro#
- #Hdd fan control mac replacement software#
Whenever the SMC system resets to its default, SSD Fan Control takes over again to make sure that your system remains quiet. The core of the system is a daemon that runs in the background and takes care of the fan management. It enables you to overrule the automatic fan control and manually configure the fan speed. In both cases the SMC system tends to go into frenzy and drive you mad with a loud fan. Sometimes reusing the external sensor is not possible or, as in more recent generations of iMacs, replacing the original hard disk breaks the system’s temperature monitoring. The SMC collects data from external sensors or by reading the internal hard disk temperature in a proprietary manner. Fan management in Apple systems relies on temperatures reported by the SMC system.
#Hdd fan control mac replacement software#
Does this solution allow HDD Fan to behave normally - without any additional software control (ie.IMac users who tweak their systems using 3rd party hard disks or solid state disks, are often surprised by an unpleasant aftermath: an annoyingly noisy hard disk fan. Does the reported temperature (and variation) make sense?Ĥ. If so, does this setup provide a temperature reading when using a tool such as MacsFanControl or iStat Pro?ģ. Has this solution been tested and validated by anyone?Ģ. I find Alexandre's answer to use a 2N3904 transistor simple and interesting and would like to know a little more about it, so please allow me to ask a few questions:ġ. This includes replacing the HDD by a SSD but also deal with the Thermal sensor issue. I purchased a new SSD drive for my late 2009 27" iMac and before I dismantle everything, I would like to be prepared for all operations in advance.
I see this thread has been going for some time and it is the best one I found on the Internet so far.
This means the solution should be software-based. The 2011 models appear to have no separate cable to the Logic board so they must use the drive's built in temp sensor data via SATA. 20 iMacs used an external feed from the HDD's built in temp sensor to send the data to the Logic board.
#Hdd fan control mac replacement pro#
The application is a great solution to noise problems such as those caused by iMac HDD replacement, or overheating problems such as those found on MacBook Pro models. In 2004 G5 iMacs, 2006 White Intel iMacs, and 2007-2008 Aluminum iMacs, a discrete temp sensor was adhered to the hard drive to read temp independently of the drive's self-reported data. Macs Fan Control gives you support for controlling fan speed with temperature sensors pane, menu-bar icon. Apple thought it was safer for the HDD temp data to be sent directly to the Logic board to be analyzed by the OS. The OS can rely on this data for fan and temp control. ALL hard drives report a myriad of self-diagnostic information via SATA and SMART (see the pic on my June 6th post). In spite of what others here are saying I have seen no evidence that there is any special firmware in these hard drives. Mid-2010 and earlier iMacs with sensor cables that plugged into the hard drive are what I'm referring to.
#Hdd fan control mac replacement install#
I'm perfectly willing to hack and modify things when it makes sense, (my Hackintosh is over- clocked to 4.7GHz, and I install Mt Lion and Mavericks on unsupported Macs all the time) but in this case it doesn't make sense. Nor do I want their iMacs running noisily because their fans have to be run at high speed all the time. I don't want to leave fan control up to my clients to monitor. Temperatures in a computer need to be monitored and the fans adjusted continuously for everything to work at peak efficiency. I don't think that any resistor or jumper is a good idea at all. I have done it this way since the very first drive replacement I had to do on one of these iMacs. The sensors from earlier iMacs (if they are the 2 lead type) also work. Then i attach the sensor with double-sided tape (same stuff we use to adhere glass on iPads and unibody MacBooks). They have 2 leads just like the iMac which I extend to reach the drive. There are several of them, I usually use the ones that are under each fan. The Macbook Pro aluminum models are the ones I usually use. I have used the sensors from earlier iMacs as well as from Macbook Pros.
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