#Reinstall imac operating system how to
#Reinstall imac operating system install

#Reinstall imac operating system install

Note: If the Install macOS High Sierra application opens, then quit the application. Note: If the following does not appear, then all updates available from the App Store application where not downloaded and installed as required.ДЄt this point you should be able to select Get to start the download of the Install macOS High Sierra application. When you get the utility window on the screen, just click on the 'Reinstall macOS' option and continue the process. Scroll down until you see the link 'macOS High Sierra', as shown below.ДЄfter selecting the link labeled 'macOS High Sierra', the App Store application should open and the following should appear. While the system is restarting, press the Command and R keys at the same time till your Mac enters the Recovery mode. Open Safari and enter the URL, as shown below. Note: All updates available from the App Store application must be downloaded and installed before proceeding. One option, for a clean install of High Sierra, would be to create a bootable installer, boot from the installer, erase the internal drive and install macOS. There is also this previous Ask Different question: How can I download an older version of OS X/macOS?.

#Reinstall imac operating system how to

You should be able to get High Sierra from the Apple website How to get old versions of macOS. There is this previous Ask Different question regarding gaining Administrator access: I don't have administrator account on my mac. How you do this depends on the chip inside your computer. In order to access the options for wiping your data and reinstalling the operating system, you need to enter macOS Recovery. The other option for resetting your Mac is Disk Utility, which is available to all users. Now I go to the High Sierra page and attempt to install it and I see this error:ДЄccording to, the latest version of macOS for your Mac is High Sierra. Erase Data and Reinstall macOS With Disk Utility.

Then did all the above again with Sierra. I restarted the machine and ran installer. Then after a couple of minutes it shows a message: It opens folder that shows InstallMacOSX.pkgД¬lick through a few times, then it says Install time remaining: about 2 minutes Partition Map Type: GPT (GUID Partition Table)Дownload El Capitan file InstallMacOSX.dmg to hard drive If Yosemite 10.10.5 is the most recent that can be installed on this machine, then I want to erase all existing data and accounts on the machine.ДЄvailable: 158.72 GB (158,723,710,976 bytes)Д¬apacity: 999.35 GB (999,345,127,424 bytes) I have an apple id, not associated with this machine. I want erase all existing data and accounts on the machine. I want to install the most recent OS available for this machine.