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After macOS reinstallation, your Macintosh HD still greyed out in Disk Utility or not showing up on Mac. Reinstalling macOS (sometimes also called a “factory reset”) is usually a rare event, and you shouldn’t have to worry about it too much. To make this done, you need an external storage device with a minimum capacity of at least 16 GB (though the larger the better) and a copy of the macOS 12 Monterey installer. You can update to El Capitan after if you like. Thanks a lot for your help! when i installing it my hard disk hdd not showing up only the usb flash memory. In Disk Utility, select the main hard drive in left column (the first one on the list, not Macintosh HD). These discs are available for OS X Snow Leopard, OS X Lion, and OS X Mountain Lion. Luckily, the issue that the internal hard drive not showing up on Mac will be fixed.
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Select Disk Utility from the utilities window of macOS Recovery, then click Continue. Disk Utility’s First Aid should be run to ensure the startup drive and the target drive do not have any issues that could impact installing macOS Catalina. I get through the first steps on Installation Disk 1 up until "Select Destination Volume. But there are specific issues, self-inflicted or not, that are much quicker resolved with a clean installation of the OS. Click the Apply button, which removes any partitions, replacing with just one, and removes all other data from the drive.
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How to Reinstall mac OS Without Losing Personal Data. Sometimes Disk Utility stopped repairing Macintosh HD, you can then try to reformat to fix Macintosh HD not mounted in Disk Utility. Once you are in OS X Utilities screen, click Disk Utility.
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If you’re unable to use Internet Recovery Mode or create a bootable USB installer, you can still use a Mac OS X installation disc. Select the startup disk and go to the Erase Tab. Or you have encountered the worst case: finding that Macintosh HD is not showing up in Disk Utility. I'm using the Mac OS to install the XCode10. ”I have the 750GB SSD on my mid-2013 ”MACBOOK PRO”. Make sure you tick the boxes next to External disks and Hard disks. If both options are enabled but the hard drive is still not showing up, ensure that the Locations section isn’t hidden in your Finder. Now all that is there are two disks, one labeled disk1 and then below that, "OS X Base System with 1. Thanks a lot for your help! Apple is not responsible for any lost data.
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Disk Utility is NOT in a menu at the top left of the screen, but if you are booted to the macOS installer, will be on the Utilities window. Click the Apply button, which removes any partitions, replacing. Reinstall macos not showing disk But it should be performed in the recovery mode.