Before you begin, you’ll need to acquire a USB flash drive. Because every modern Mac supports USB-C, and some Macs only feature USB-C, I recommend purchasing a USB drive with a USB-C connector.

The second thing to keep in mind is that you’ll want to get a USB drive with at least16GB of storage space. Of course, having more storage won’t hurt. I still recommend this SanDisk Ultra Dual Drive USB Type-C Flash Drive. Not only is it super-affordable, but it comes both USB-A and USB-C connections, which allows the drive to connect to any Mac with ease.

Make sure that there’s nothing important that you need on the drive, because the full contents will be deleted. I recommend checking the contents, and then formatting the drive as macOS Extended Journaled (HFS+) via Disk Utility. Keep in mind that APFS-formatted drives cannot be used to create the macOS Big Sur USB installer. 


















OS X 10.8.5 Mountain Lion File           :     Link    Link2
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BalenaEtcher File                                 :     Link    Link2
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By :Khawar Qayyum


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