How to Reinstall OS X on a Mac. Reinstall a previous version of the Mac OS using the appropriate Mac OS Installer. Frozen throne setup download. Use Time Machine to restore from a date when your Mac was using a previous version of the o perating system. With any of the downgrade methods, you’re going to lose all the data currently on your Mac. Did you lose your important files from your Mac computer? Well, one of the common issues in the life of a Mac user. Read on to know about how to recover deleted files with Mac terminal.
I then went back and ported two games that had missed the Mac before I had shown up: Day of the Tentacle and Sam & Max Hit the Road, which became my two favorite LucasArts adventures of all time. Unfortunately, no one had planned on me going back to port those two games (I did it in my 'spare time' between projects), so I had a bit of a struggle trying to convince the powers that be that they should actually sell them. It took some hard lobbying, but eventually they decided to go for it.
An amusing aspect of the Day of the Tentacle port is that the PC version had an easter egg where you could go back and play the very first LucasArts adventure game Maniac Mansion. To do this, the game would just launch a DOS shell running the original game. Of course, Maniac Mansion had never been ported to the Mac before, so everyone assumed we wouldn't be including it. But I would have none of that — Mac users deserved the easter egg as well! So I went back to the old 16-bit source code and converted it to a library that compiled in a 32-bit world. I simulated 4-color CGA video modes for the graphics. Furthermore, I ended up writing my first emulator: a crude AY-8910 to simulate the sound chip that was in the Tandy 1000 using the Mac's simple DAC sound playback. I happened to know how that chip worked due to my past experience with the PCjr, which also had one.
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.
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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.
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.
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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: How to get free coins on caesars slots.
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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.