Restart by holding the Alt key (or Option key, depending on the keyboard. (also feel free to throw a virtual tomato at me for being dumb. This is the simplest possible install procedure: 1. I'm sure there has to be some little-documented way of actually accomplishing this. Step 3: Disconnect your mac from Internet. power on your mac holding Command+R to go into the Recovery mode. How do I create an OS X El Capitan installation media from an iMac running MacOS Monterey? The new iMac won't run the El-Cap installer package inside the. Copy this application to a writable Mac OS Extended formatted disk and reopen it to continue installation. I have a brand new iMac running MacOS Monterey. Now I have an '09 iMac (iPaperweight) with no OS, and it won't let me download OS X from the App Store through recovery because apparently that's no longer available (?).īut. It will be placed in your Applications folder with the name: Install. Turns out it didn't, and then I ruined it anyway by trying to change the partition size/filesystem type from 64 GB OS X Journaled to ExFAT 12 GB (I'm not sure why on earth I thought that would work and not erase the partition. So, I did the dumb, I erased the HDD on an '09 iMac (El Capitan) without verifying that the third-party-created thumbdrive installer (DiskCreatorX) actually worked as a bootable drive on the machine. Download a program, such as DiskMaker X, which allows you to make a bootable OS X disk.
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