Apple includes an awesome app called Migration Assistant that we have used to help customers start over with a fresh macOS but keep all their data and applications.
Apple allows a lot of different installation and migration options. We will discuss the main ones here, but if this does not answer your migration question, please contact us for more specific information about the upgrade you are planning.
What is Migration Assistant Migration Assistant allows you to transfer applications, settings and data from another Mac. A mac can boot from an external drive, for example, if you put your old hard drive into an external enclosure, you can boot from it, and run that hard drive and it would be exactly the same as your old mac If you just want a new macOS, start fresh with no legacy upgrade data, then you can use Migration Assistant to reinstall all your data and apps, and you will have the benefit of a new macOS with all the apps and data from your old drive.
How to use Migration Assistant After you have installed the new macOS, the system starts and asks for generic information: country, keyboard type etc. The next part of the installation setup is Migration Assistant.
If you have installed a new SSD, you can use either your old hard drive in an external enclosure or a Time Machine back up as a source for Migration Assistant. The example in the image below, a Time Machine disk is connected and to be used Select the machine you want to restore from in Time Machine Then select the type of data you want to migrate That is it! You should have a new macOS with all your applications and data restored back on the system.
If you are migrating to an old version of OSX such as Lion, then you need to use another method. This method is not recommended if the macOS are too far apart in release.
It is ok if you are moving from Sierra to High Sierra. But if your computer is on Lion, your application and core system files will not be compatible with High Sierra. Time Machine has many features that can make your life easier when upgrading to an SSD. You should be backing up on a regular basis and Time Machine is Apple's built in back up software that is easy to use.
To create backups with Time Machine, all you need is an external storage device. After you connect the device and select it as your backup disk, Time Machine automatically makes hourly backups for the past 24 hours, daily backups for the past month and weekly backups for all previous months. The oldest backups are deleted when your backup disk is full. If you connect a new external drive to your mac you should see this window pop on the screen.
If you dont get the pop up you can go to Time Machine app and select disk or add Disk. The software will set up automated back ups. If you periodically connect the Time Machine, if it does not automatically start you can start a backup manually, choose Back Up Now from the Time Machine. If your Time Machine is backing up your whole drive, yes the macOS is backed up. You have a complete back up of your Mac.
You do not have to download macOS to use your Time Machine. It is not totally understood what is happening, but it is not uncommon for Time Machine to get additional files from the Apple website before restoring a Time Machine back up. Usually these files are to do with the recovery partition on the Time Machine or the Disk Utilities page.
No judgement here, but here is a way to fix all that. We call it the Double Clone. The Double Clone Instead of ordering a clone cable or an external clone case, you buy an external drive. A 1tb or 2tb drive is a good size, the major brands are Toshiba, Seagate, Verbatim or Western Digital. You dont need the SSD version, just a standard external drive.
Format the external drive. Use Carbon Copy Cloner to clone your Mac onto the new drive. Install the new SSD. Restart the Mac holding down the Option key. Select the new cloned external drive. You are now running your Mac off the external drive.
When the clone if finished, shut down the Mac, remove the external clone and restart the Mac. Open Time Machine, plug in the external drive, i f you don't get the pop up window asking to turn teh drive into a Time Machine, then select disk or add Disk and start a new Time Machine. Please note it will erase all the clone data, be sure your new SSD is working as expected before erasing the clone.
Rebooting off Time Machine Time Machine does not have a recovery partition, however you can use it to restore your Mac or install a new macOS. This loads the boot manager and you can see all drives attached to the Mac.
The Time Machine should display as an external drive. Select it and the Mac will build a macOS Utilities page that will have Disk Utility to initialise a new drive or erase a current drive and install a new macOS. We have recommended Diskmaker X in the past but the method we outline here is the recommended method from Apple. If you have already downloaded and upgraded, you will need to download the MacOS again Apple deletes installer once it has been used.
For best results use a USB 3. You can use an external hard drive note: any data on the drive will be lost as it gets formatted. You can erase and rename. The MacOS creation method will reformat the drive, so it does not need to be any specific format type like Fat32 or Mac Journaled.
What is important is the name of the drive, as it is used in the code below. We are going to use the command line app called Terminal to create the MacOS drive. Don't worry if you have never used it, it is very easy, not that scary. Open Terminal, it is found in the Utilities folder in Applications.
Paste the code you copied into Terminal and hit enter. It will ask for your system password usually the one you log on with at start up. Type Y and return when it asks if you want to erase this drive. When it is finished creating it will display "Copy complete". You can close Terminal. Select and hit return. You do not need to select a network. Go into Disk Utility, Erase and name.
Proceed to install macOS. When you get your new SSD it is uninitialised. This means it can be used in a Mac or PC. It needs to be initialised before use.
In the PC world they call this formatting the drive. In the Mac world it is called Erase and it is a function of Disk Utilities Disk Utility is a tool included in many places. It is found in the Utilities directory in Applications. It is included in any macOS install app. Installing memory The internal components of your iMac can be warm. After you shut down your iMac and give it time to cool, follow these steps: Disconnect the power cord and all other cables from your computer.
Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display. Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth. Open the memory compartment door by pressing the small grey button located just above the AC power port: The memory compartment door will open as the button is pushed in. Remove the compartment door and set it aside: A diagram on the underside of the compartment door shows the memory cage levers and the orientation of the DIMM.
Locate the two levers on the right and left sides of the memory cage. Push the two levers outward to release the memory cage: After the memory cage is released, pull the memory cage levers toward you, allowing access to each DIMM slot.
Remove a DIMM by pulling the module straight up and out. Note the location of the notch on the bottom of the DIMM. Find your model below for specific installation instructions and notch locations: iMac Retina 5K, inch, DIMMs have a notch on the bottom, slightly left of the middle.
You don't need to press the compartment door release button when replacing the compartment door. Place the computer in its upright position. Reconnect the power cord and all other cables to the computer, then start up the computer. For these inch and Using a Philips screwdriver, remove the RAM access door in the bottom of your computer: Remove the access door and set it aside.
Untuck the tab in the memory compartment. Apple Macs iPad. In This Article. Intel iMacs. Find the Model Number. RAM Upgrades. Internal Hard Drive Upgrades. Was this page helpful? Thanks for letting us know! Email Address Sign up There was an error. Please try again. You're in! Thanks for signing up. There was an error. Tell us why! More from Lifewire. Upgrade the Hard Drive in and Later iMacs.
The 10 Best Laptops for Photography in MacBook Air vs. Fix Your Stuff Community Store. Has the spinning beach ball of death become a familiar sight on your Mac? Source: Flickr Answer: none of the above. Imagine how many tabs you could have open at once with all that RAM!
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