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How to upgrade hard drive in old Mini

This is primarily a software question.


I have a late 2012 Mini, model A1347, gathering dust in the basement. It is down there, because the HDD failed years ago. But the rest of the unit still worked. I am thinking that I could replace the hard drive with an SSD, and then I would have a second Mac for some other use. A machine that old would not be my primary machine, but I am thinking I could use it as a Time Machine over wifi or even as a server.


I tried once before to remove the failed hard drive. I did not complete the task, because I did not find a video specific to my particular Mini. Apparently my Mini is the server variation, even though it came with only one hard drive. But I think that I have found a video showing how to dissemble what I have.


My question here is, "what next?" Once I get the SSD installed, then what? I have read that I have to format the drive. I know Disk Utility, but is Disk Utility stored somewhere already? After all, the new hard drive at this point is blank. Or do I have to download and reinstall the operating system? If so, how do I reinstall the OS?


I expect that I could hook up this old Mac to one of my newer Macs. I think that I could run any software from a later Mac into the new SSD. Is that how that works? Or might the restore function of the OS might be lying there somewhere, ready for use?

Posted on Mar 16, 2023 1:54 PM

Reply
Question marked as Top-ranking reply

Posted on Mar 16, 2023 3:24 PM

Here you go, with even Installation Video..


OWC SSD Upgrade Kits For Mac mini 2012 (macsales.com)


Restore mode should get an OS back on it...


Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following combinations on your keyboard. Command-R is generally recommended, especially if you never installed macOS Sierra 10.12.4 or later… How to reinstall macOS - Apple Support

Command (⌘)-R

Install the latest macOS that was installed on your Mac.


Option-⌘-R

Upgrade to the latest macOS compatible with your Mac.


Shift-Option-⌘-R

Install the macOS that came with your Mac, or the closest version still available.


2. Decide whether to erase (format) your disk

If you need to erase your disk before installing macOS, select Disk Utility from the Utilities window, then click Continue. You probably don't need to erase, unless you're selling or giving away your Mac or have an issue that requires you to erase. Learn more about when and how to erase.

3. Install macOS

After starting up from macOS Recovery, follow these steps to install macOS:

  1. Choose Reinstall macOS (or Reinstall OS X) from the Utilities window.
  2. Click Continue, then follow the onscreen instructions to choose your disk and begin installation.
  3. If the installer asks to unlock your disk, enter the password you use to log in to your Mac. If it doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk


  1. Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

If your Mac restarts to a setup assistant, but you're selling or giving it away, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.



If you never installed macOS Sierra 10.12.4

If macOS Sierra 10.12.4 or later was never installed on your Mac, macOS Recovery works differently:

  • Command-R is still the recommended way to start up from macOS Recovery. This combination makes sure that the installation isn't associated with your Apple ID, which is important if you're selling or giving away your Mac.
  • Option-Command-R installs the macOS that came with your Mac, or the closest version still available.
  • Shift-Option-Command-R isn't available.

How to reinstall macOS - Apple Support 


Similar questions

2 replies
Question marked as Top-ranking reply

Mar 16, 2023 3:24 PM in response to R_55a

Here you go, with even Installation Video..


OWC SSD Upgrade Kits For Mac mini 2012 (macsales.com)


Restore mode should get an OS back on it...


Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following combinations on your keyboard. Command-R is generally recommended, especially if you never installed macOS Sierra 10.12.4 or later… How to reinstall macOS - Apple Support

Command (⌘)-R

Install the latest macOS that was installed on your Mac.


Option-⌘-R

Upgrade to the latest macOS compatible with your Mac.


Shift-Option-⌘-R

Install the macOS that came with your Mac, or the closest version still available.


2. Decide whether to erase (format) your disk

If you need to erase your disk before installing macOS, select Disk Utility from the Utilities window, then click Continue. You probably don't need to erase, unless you're selling or giving away your Mac or have an issue that requires you to erase. Learn more about when and how to erase.

3. Install macOS

After starting up from macOS Recovery, follow these steps to install macOS:

  1. Choose Reinstall macOS (or Reinstall OS X) from the Utilities window.
  2. Click Continue, then follow the onscreen instructions to choose your disk and begin installation.
  3. If the installer asks to unlock your disk, enter the password you use to log in to your Mac. If it doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk


  1. Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

If your Mac restarts to a setup assistant, but you're selling or giving it away, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.



If you never installed macOS Sierra 10.12.4

If macOS Sierra 10.12.4 or later was never installed on your Mac, macOS Recovery works differently:

  • Command-R is still the recommended way to start up from macOS Recovery. This combination makes sure that the installation isn't associated with your Apple ID, which is important if you're selling or giving away your Mac.
  • Option-Command-R installs the macOS that came with your Mac, or the closest version still available.
  • Shift-Option-Command-R isn't available.

How to reinstall macOS - Apple Support 


How to upgrade hard drive in old Mini

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