Start Up For Mac

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. Start up your Mac while holding down the T button on the keyboard. Keep holding the T button down as you hear the startup chime and keep it pressed until the Thunderbolt icon appears on your.

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

Download macOS

Find the appropriate download link in the upgrade instructions for each macOS version:

macOS Catalina, macOS Mojave, ormacOS High Sierra
Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.

OS X El Capitan
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the 'createinstallmedia' command in Terminal

  1. Connect the USB flash drive or other volume that you're using for the bootable installer. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
  2. Open Terminal, which is in the Utilities folder of your Applications folder.
  3. Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume in these commands with the name of your volume.

    High Sierra:*
    El Capitan:
  4. Press Return after typing the command.
  5. When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
  6. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the bootable installer is created.
  7. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument, similar to the way this argument is used in the command for El Capitan.

Use the bootable installer

After creating the bootable installer, follow these steps to use it:

  1. Plug the bootable installer into a compatible Mac.
  2. Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to macOS Recovery.
    Learn about selecting a startup disk, including what to do if your Mac doesn't start up from it.
  3. Choose your language, if prompted.
  4. A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar.
  5. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

Learn more

For more information about the createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:



High Sierra:

El Capitan:

Are you having slow startup issues with your Mac? Slow startup times can be caused by many different problems and they can be very frustrating for many users. Waiting for your computer is a waste of time. Startup time is important because one of the most common troubleshooting tips that we often share here on macReports is to restart your device. If macOS takes forever to boot, you dread rebooting your Mac.

The purpose of this article is to show you how you can try a few tips and tricks to improve your Mac’s boot times significantly.

Usb wireless adapter driver mac os x. See also: Mac Keeps Freezing?

Typically, you Mac should take about 30 seconds to fully startup. If your Mac is taking much more time than this, then this article is for you.

Mac slow start up

1. Update your Mac. If you are having this issue, updating your Mac may help you. Here is how you can update your Mac:

  • To check for updates, on your Mac (macOS Mojave or later), click the Apple menu > System Preferences and Software Update. If there are updates available, click the Update Now button.
  • If your Mac is running an earlier macOS version than Mojave, on your Mac, click App Store and then the Updates tab.

2. Check for low free disk space and free up disk space.

You Mac need sufficient space to run optimally. If your Mac does not have enough space, the slow boot time may occur.

On your Mac, click the Apple Menu > About This mac and then click the Storage tab. Review your storage use.

Click the Manage button. This will open the Storage Management window. You can see several recommendations for optimizing and freeing your storage.

Read this article about how you can free up space on your Mac. You may also want to uninstall your unused apps.

3. Cluttered desktop. If your desktop is full of stuff, then organize your desktop.

4. On your Mac, follow the steps below:

  • Click the Apple menu
  • Click System Preferences
  • Click Startup Disk
  • Click the lock icon so that you can make changes (you may have to enter your password)
  • Select your startup disk (probably it is Macintosh HD)
  • Click the lock icon again
  • Then click the Restart button to restart your Mac.

5. Disable unnecessary startup and login items

The more startup items you have, the longer it will take to start up macOS. Some of them should not start with macOS. Because it is a waste of resources that extends start up time. Here is how you can manage this:

  • On your Mac, click the Apple menu > System Preferences
  • Click Users & Groups
  • Click the Login Items tab and remove the unnecessary apps that you do not need at launch.

Startup For Macbook Pro

Startup for macbook air

6. Reset PRAM (or NVRAM). Here is how:

  • Turn off your Mac
  • Turn on your Mac and immediately enter the Option, Command, P, and R keys
  • Keep holding the keys for about 20 seconds
  • And then release the keys and your computer will restart.

7. Restart your Mac in safe mode and then restart normally. Doing so may help you fix your slow startup problem because safe mode performs a check of your startup disk. Here is how:

  • Turn off your Mac
  • Turn on your Mac and immediately press and enter the Shift key
  • Keep holding the Shift key until you see the login screen
  • Login (you may have to log in a few times)
  • Now your computer is in safe mode.
  • Then exit safe mode by restarting your Mac normally without pressing the Shift key.

8. Your Internet connection may be slow. And if you are using iCloud (you probably are) then your Mac startup time might be increased. If your Mac’s Internet connection is poor, you Mac may struggle to start. If you are having this problem, you may try restarting everything (your Mac, modem and router). Please also see:

9. Viruses or Malware? Viruses, spyware and other malware can slow your boot time. It is important that you protect your computer from these harmful programs.

10. Reset the System Management Controller (SMC).

11. Do not reopen windows when turning off your Mac. When you turn off your Mac, your Mac will ask you if you want to ‘reopen windows when logging back in’ Selecting this box may cause a longer startup time.

12. You may want to turn off FileVault, if it is enabled. This will help you fasten the boot time. Here is how:

  • Click the Apple menu
  • Click System Preferences
  • Click Security & Privacy
  • Click the FileVault tab
  • Click the lock icon to make changes
  • And click the Turn Off FileVault button

Startup Disk Mac

13. Periodically check your Mac’s health by going to System Information.