It will wipe the hard drive completely so any data on it will be lost. When I try to restore it as.dmg file I get the error Could not validate source Invalid argument with OSStatus error 22. I mounted the HDD (using an external enclosure) on a MacBook Pro with macOS Catalina. The best way to stop the nagging is to right click the update and click ignore. Once this is installed you can ignore all other security updates that apple throws at you. The last security update you can safely install can be downloaded here. I suggest using an SSD as this will improve boot times on the Mac Pro once you are done.ĭO NOT INSTALL THE FOLLOWING UPDATE: Security Update 2018-001 or any later Security Update, as this will break the installation and you will have to start over. This will take a while so you can go get a beverage of choice while this is happening. To restore the image to a drive or partition, do the following. Now that you have the restore image it needs to be restored to your Mac Pro. GB or smaller RAM modules will cause issues. RAM modules that are at least 2GB in size.
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