2017 os for macbook air starting mac#
2017 os for macbook air starting windows#

If you don’t see the volume you want to start your computer from, check the following: Hold down the Command and R keys on your keyboard until you see the Apple logo appear onscreen.

2017 os for macbook air starting mac#

To start your Mac from the Recovery System, use these steps: You can also start your Mac from OS X Recovery or Internet Recovery if your Mac was manufactured after 2011.

From the menu that appears, choose Restart in OS X.

In Windows, click the Boot Camp icon in the system tray.

2017 os for macbook air starting windows#

If you have started up your Mac in Windows using Boot Camp, you can use the Boot Camp system tray to switch your startup disk default back to OS X. Startup Manager automatically adds bootable volumes as you connect them.

You can also attach FireWire or USB external hard drives that contain an operating system to add to the list of startup volumes. If you have an optical drive connected to your computer, you can insert an installation disc to see it in Startup Manager.

Double-click or press the Return key to start up your Mac from the volume you selected.

Use your mouse or trackpad, or left and right arrow keys to select the volume you want to use.

If you don’t see the volume you want to use, wait a few moments for Startup Manager to finish scanning connected drives. After a few seconds, the Startup Manager appears.

Immediately press and hold the Option key.

Use these steps to choose a startup disk with Startup Manager: Startup Manager allows you to pick a volume to start from while the computer is starting up. Temporarily change your startup disk with Startup Manager The next time you start up or restart your computer, your Mac starts up using the operating system on the selected volume.

Select your startup disk from the list of available volumes.

Click the Startup Disk icon in System Preferences, or choose View > Startup Disk.

From the Apple menu choose System Preferences.

The table below explains how the default values are determined when one or more of these options is omitted.Set the default startup disk You can change the startup disk your Mac automatically uses from System Preferences. The add command for gpt includes the -i, -b, -s and -t command-specific options. This section was added to this answer mainly to address concerns posted by user Jean_JD. This section can be ignored by the OP (user Gizem Kaya). Gpt -f add -i 2 -b 409640 -s SizeInBlocks -t apfs disk0 When entering the commands, use the output from the previously entered diskutil info diskXsV | grep 'Disk Size' command to replace SizeInBlocks with the disk size in 512-Byte-Units for the APFS Volume containing macOS. Otherwise, proceed.Įnter the following commands. If the output from both commands match, then you are done. When entering the commands, use the output from the previously entered diskutil list internal command to replace diskXsV with the identifier for the APFS Volume containing macOS and replace diskYsC with the identifier for the Apple_APFS Container listed as the Physical Store for the APFS Volume. If not, then post the output from the above commands to your question, post a comment to my answer and wait for my response. If the above commands execute successfully, then the name of the APFS volume containing macOS will appear in the output from the command diskutil list internal. Post the output from the above commands to your question.Įnter the commands given below. The commands just product diagnostic information, which may be helpful. Boot to the same Recovery Mode used in your question.Įnter the following commands.