Cowry Mac OS

The maximum version of Mac OS X, OS X, or macOS supported by each G3 and later Mac follows. For complete specs on a particular system, click the name of the Mac. For all Macs that are compatible with a specifc maximum supported version of Mac OS X - courtesy of EveryMac.com's Ultimate Mac Sort - click the OS of interest.

  • The history of macOS, Apple's current Mac operating system originally named Mac OS X until 2012 and then OS X until 2016, began with the company's project to replace its 'classic' Mac OS.That system, up to and including its final release Mac OS 9, was a direct descendant of the operating system Apple had used in its Macintosh computers since their introduction in 1984.
  • In 1984, Apple debuted the operating system that is now known as the 'Classic' Mac OS with its release of the original Macintosh System Software. The system, rebranded 'Mac OS' in 1996, was preinstalled on every Macintosh until 2002 and offered on Macintosh clones for a short time in the 1990s.
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Start up from macOS Recovery

Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:

Apple silicon

Turn on your Mac and continue to press and hold the power button until you see the startup options window. Click the gear icon labeled Options, then click Continue.

Intel processor

Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.

If you're asked to select a user you know the password for, select the user, click Next, then enter their administrator password.

Reinstall macOS

Select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.

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Follow these guidelines during installation:

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  • If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
  • If the installer 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 first.
  • If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
  • Allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

After installation is complete, your Mac might restart to a setup assistant. If you're selling, trading in, or giving away your Mac, 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.

Other macOS installation options

When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions:

  • On an Intel-based Mac: If you use Shift-Option-Command-R during startup, you're offered the macOS that came with your Mac, or the closest version still available. If you use Option-Command-R during startup, in most cases you're offered the latest macOS that is compatible with your Mac. Otherwise you're offered the macOS that came with your Mac, or the closest version still available.
  • If the Mac logic board was just replaced, you may be offered only the latest macOS that is compatible with your Mac. If you just erased your entire startup disk, you may be offered only the macOS that came with your Mac, or the closest version still available.

You can also use these methods to install macOS, if the macOS is compatible with your Mac:

  • Use the App Store to download and install the latest macOS.
  • Use the App Store or a web browser to download and install an earlier macOS.
  • Use a USB flash drive or other secondary volume to create a bootable installer.

It’s been a while but thought I would give another quick project a try on one of my Raspberry Pis. I just found a cool project created by a guy, Matt South. Here is a direct link to the project:

This project allows you to turn your Raspberry Pi into a honeypot. You may be asking well what is a honeypot. A honeypot is a system you can setup on your network that will attract potential attackers and will attempt to log their activities. If someone tries to attack your network you can get a notification about it so that you can either log the event or even respond to it.

By following the steps on both the above link and throughout the install process you can relatively easily turn your Raspberry Pi into a honeypot.

The setup is pretty automated and relatively easy but I did run into a few issues/difficulties during the process.

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  • The setup tells you to create an app password to send alerts via email. From my research if you don’t have 2FA turned on for the account then this step is unnecessary.
  • [-] You may just need to add a default logging rule to the

    ‘filter’ ‘INPUT’ chain on Raspberry Pi. For more information,

    see the file “FW_HELP” in the psad sources directory or visit:

  • The above item is an error that I got when finishing the setup.
  • I tried running a fast port scan using nmap and did not receive an alert.

I will have to do some further work on this and see if I can get it working properly. So far it doesn’t seem to work correctly. I must be missing something as other users/commenters are reporting that it does work properly. I will update this blog when I have fixed some of the issues.