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To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart. Keep holding until the described behavior occurs.
- Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. If your Mac is using a firmware password, you're prompted to enter the password.
- Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.
If a key combination doesn't work
If a key combination doesn't work at startup, one of these these solutions might help:
You set your Mac or Macbook which disk to start up from when more than one startup disk is connected. This works for USB drives including the NinjaStik For 2018 to 2020 Macs with the Secure Boot T2 Chip, see the 2020 Macbook Pro Boot from USB instructions. A “startup disk” is a volume or partition of a drive that contains a bootable operating system. In that mode, when you choose to reinstall without erasing the drive, my recollection is that Recovery looks for the current OS system installer on your startup disk in.
- Be sure to press and hold all keys in the combination together, not one at a time.
- Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
- Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.
- If you're using a wireless keyboard, plug it into your Mac, if possible. Or use your built-in keyboard or a wired keyboard. If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
- If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.
- To do that select use an existing Virtual Hard Disk File, then browse the VMDK file and select that. Use an Existing Virtual Hard Disk Create Bootable USB for Mac on Windows 10. When the Virtual Machine is created, you need to apply some settings in order to boot mac normally.
- How do I clear startup disk on Mac? Following the below-mentioned steps will help you make your Mac fresh again. Empty Your Trash. You can consider the message a 911 call. While your Mac is reaching out for your help, the most convenient method to get rid of this digital obesity is to remove files and data eating up the disk space.
- On your Mac computer, you may have multiple partitions created on your storage disk for various purposes. Some have a separate partition of their Media, some have a secondary operating system running on their Mac via Boot Camp, etc.
Remember that some key combinations are disabled when your Mac is using a firmware password.
Learn more
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- Learn what to do if your Mac doesn't turn on.
- Learn about Mac keyboard shortcuts that you can use after your Mac has started up.
Don’t know how to check disk space on Mac? Read this guide about how to see disk space on Mac, and get a simple method to free up disk space on your Mac easily and quickly.
Mac Tips & Issue Fixes
Mac Related Tips
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Mac Problems & Fixes
Mac Clean Tips
MacClean – Your Best Mac Cleaner Software
Download MacClean prior to save your time before reading this guide on how to check and free up disk space on Mac.
All of your apps and files on your Mac are stored on your hard drive. You can easily check the free space on your hard disk to make sure you have enough space on your computer’s hard disk. That’s because Mac OS X needs some free space to function effectively. Just follow the instructions below to determine how much space is available.
How to Check Disk Space on Mac
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Part 1. How to Check Disk Space on Your Mac
Step 1. On a desktop, click the Apple icon and select “About This Mac”.
Step 2. At the About This Mac window, click on the “More Info” button.
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Step 3. Choose the “Storage” tab to check the disk storage overview and capacity.
Or you can
Step 1. On your Mac desktop, find your hard drive icon.
Step 2. Right click it and choose “Get Info” option.
Step 3. You will see “Capacity” of drive, “Available” and “Used” space.
If you find your disk space is running out of space, you might need to clean up your Mac in order to free up disk space on your Mac. Now follow the rest part to free up disk space on Mac with an effective Mac cleaning software MacClean.
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MacClean is one powerful cleaning tool made to free up and speed up your Mac. It works well for all Mac computers, including MacBook Air, MacBook Pro, iMac, Mac mini, etc. This professional software can help you remove all kinds of junk files and cookies from your Mac to get more available disk space. It can also find out malicious cookies to eliminate hidden dangers.
Part 2. How to Free Up Disk Space on Mac with MacClean
Step 1. Free download and install MacClean on your Mac computer. Take a few seconds to finish the installation process.
Step 2. Clean junk files on your Mac. You can click any junk item on the left side of this software to clean them, such as System Junk (User Junk, OSX Junk, App Leftover) and Internet Junk (Browsing History, Caches, Download History and Cookies).
How to Free Up Disk Space on Mac with MacClean – Step 2
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Step 3. Delete some useless old/large files or duplicate files on your Mac. By using Cleanup and Optimization Tools of MacClean, you can easily pick out duplicates and old/large files.
How to Free Up Disk Space on Mac with MacClean – Step 3
Also Read: How to Clear All Cache on Mac >
The Bottom Line
If your Mac is running out of space after checking the disk space on your Mac, just try MacClean to free up more disk space on your Mac. If you have any questions, please let us know in the comment section. Meanwhile, please share this guide with your friends if it is helpful for you.
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