Now quit disk utility and open the OS installer. Once you choose this, now click the erase button. if you're going to install High Sierra or something older, choose "Mac OS extended with journaling enabled", GUID partition formatĥ. if you're going to install Mojave or Catalina (I would not install Catalina unless there is no other choice), choose to erase in APFS, with GUID partition format This represents the actual physical drive inside. In disk utility's window, look to the left. If it's NOT there, don't worry about this and go to step 3.ģ. Is there a "view" menu? If so, choose "Show all devices" if it's there.
When you get to internet recovery, try this:Ģ.
See Erase and reformat a storage device.It would help to know what year the iMac was made and what version of the OS had been previously running on it. You can’t delete or erase your startup volume.
When the operation is finished, click Done. If the APFS volume you want to erase isn’t a member of a volume group, click the Erase button to erase the selected volume. If the APFS volume you want to erase is a member of a volume group, click the Erase Volume Group button to erase all volumes in the group, or click the Erase button to erase only the selected volume. If you want to change the format, click the Format pop-up menu, then choose an APFS format. See the Apple Support article About macOS Recovery on Intel-based Mac computers.Įnter a new name for the volume, if desired. To erase the volume, you need to run Disk Utility in macOS Recovery. If the Erase button is dimmed, the selected volume can’t be erased because it’s in use. If Disk Utility isn’t open, click the Launchpad icon in the Dock, type Disk Utility in the Search field, then click the Disk Utility icon. In the Disk Utility app on your Mac, select the APFS volume you want to erase in the sidebar. When you erase a volume, all the data on the volume is permanently erased, and the empty volume remains in the container.
0 kommentar(er)
