The vast majority of iMac’s shipped since 2012 until 2019 came with old mechanical Hard Disk Drives (HDD) which is why if you’ve updated your Mac to OS Mojave or higher you will have noticed a large performance drop such as over a minute if not more to boot up. But why is this ? There are a couple of contributing factors. The main one is that since the last update to OS High Sierra, Apple change the file partition map from JFS to APFS . APFS has been designed for the much newer and 10x faster Solid State Drives (SSD) yet they continued shipping new iMacs up until the end of 2019 with old HDD’s. Newer SSD’s also have no moving parts, so much less likley to fail, and with no moving parts they operate using less energy thus more efficient and cooler. The other reason is that as Operating Systems ( OS’s ) have evolved with more and more bells and whistles, this puts additional strain on an already tired and over worked HDD.
This particular iMac came in to us with a failed HDD. It couldn’t be repaired using disk utility, or any thing else. It wouldn’t mount nor present any data. Our customer also said that it had been behaving ‘oddly’ for a while with internet connectivity issues and mail app would no longer work. Delving deeper this Mac was on it’s original OS – OS Mavericks 10.9 – Which is the OS that it shipped with when purchased early 2014. It had never had an update, thus when support ended for OS Mavericks a few years ago and no longer received security updates, webservers see it as insecure and a vulnerability and so block it from connecting.
The same is true of out of date applications such as Mac mail no longer working.
The fix by Mycomputerworks & Macrehab – The poorly HDD was mounted in our data recovery rig and using specialist tools and software, our customers data was retrieved and saved to another drive.
After a thorough clean of of the mac’s inner workings of dust and debris and all the old glue strips removed which hold the screen in place -A nice new SSD was fitted after removing the faild old HDD.
Initially OS High sierra was installed as it contains a firm ware update for the logic board, and then further updated to OS Catalina 10.15.7 being the maximum supported OS for this Mac. Although there are ways to have put a current OS on there such as Monteray thats is covered in a different post.
Once fully updated, and zipping along with a boot time of now just 20 seconds we connected the drive with our customers recovered data and imported it back into the iMac. With all works complete we supplied our customer with an exteral USB Hard Drive in a matching aluminium case and set up Time machine for them with a full back up.
The usual suspects had our customer going in circles and ended up telling them they needed to purchase a brand new iMac. They would never have seen their lost data again, and here we are with a beautifully fast and solid iMac good for years to come all at a fraction of the cost.
Apple had quoted our customer as ever, an astronomical amount of money as they said it needed a new logic board. Upon plugging this in, it indeed would not turn on. Using a USB-C multimeter it showed the Mac was taking 5 volts, not 20 Volts needed to turn it on, or to charge correctly. Upon opening this up, apart from the battery being bad we found water damage on the only singe USB-C port it has. On cleaning up the port, there’s a ‘hole’ burned right through it beneath the gold pin.
We put in a replacement USB-C port (not entire logic board) a new OEM battery, and this guys is again taking 20 volts, booting and charging again as it ought, all at a fraction of the cost at Apple, and without needlessly losing all your data. Don’t delay, send yours in today !
This still very capable 2009 27″ iMac i7 with 16GB Ram was brought in with the no entry sign showing which means dead hard drive essentially.
We upgraded to a 500GB Solid State Drive and using a patcher installed OS Mojave to give this beast of a mac a good few more years yet. This iMac now boots in just over 20 seconds to desktop. Apple say no, Apple say it’s Antique. We give all Mac’s equal love here !
You’ve seen and heard Apple talking about the iMac with 5K Retina display, the MacBook Pro with Retina display, and so on. But what is a Retina display, and why should you care?
Retina displays are high-resolution screens on which graphics are extra sharp and text is super crisp.
The LCD screens used in Apple’s displays use a grid of “pixels”—the smallest possible dot whose color can be controlled—to create all the text and graphics you see. Today’s iPhone 7 Plus screen can fit 401 pixels into each inch. As pixel density goes up, the pixels get smaller. With a 72 ppi (pixels per inch) screen, it’s easy to see each individual pixel in a character, but the higher the pixel density, the harder it becomes to pick out separate pixels.
When Steve Jobs unveiled the iPhone 4 in 2010, he said that for a screen that’s held 10 to 12 inches from the eye—about the distance at which many people hold their iPhones— the human eye can’t resolve individual pixels if it’s about 300 ppi. At longer distances, it becomes harder to discern small details, so most people won’t be able to pick out pixels on a screen viewed at arm’s length, such as an iMac display, if it’s about 220 ppi.
So Apple says a “Retina display” is any screen whose pixel density is high enough that someone with 20/20 vision cannot see individual pixels at the standard viewing distance used for that device.
For the Mac this is about 220 ppi. Larger iPads have a pixel density of 264 ppi, and the iPad mini checks in at 326 ppi. From the iPhone 4 through the iPhone 7, pixel density stayed at 326 ppi, but the iPhone 6s Plus and iPhone 7 Plus are 401 ppi. The tiny Apple Watch screen is about 330 ppi.
If you suffer from eyestrain, reading on a Retina display will likely be easier and less tiring, since the words will be clear and crisp, without any of the fuzziness on the edges that you see on lesser displays.
Last, the words “Retina display” are an Apple trademark. So you won’t see any other manufacturers claiming that their products have Retina displays.