Summary: It is advisable to back up all the data on the Macintosh HD before you implement the steps to erase the Big Sur or Catalina SSD volume.
FYI, Stellar Data Recovery Professional software helps you recover an accidentally erased Mac hard drive. Do consider this tool if you have erased your drive unknowingly.
Erasing macOS Mojave 10.14 Safely
Hope you have backed up the data safely to an external hard drive. Follow the sequences of steps to erase macOS Mojave SSD/HDD:
Warning: Erasing a Macintosh HD will remove your data stored on it. Once erased you can’t recover data without a data recovery software hence proceed with caution.
This is how you can erase your APFS start-up disk drive on macOS Mojave 10.14.
Vishal is a data recovery expert @Stellar. He addresses data loss scenarios on a Mac. He intends to help people solve their macOS problems. Besides, Vishal prefers to read about astronomy and autobiography, and his favorite is Steve Jobs - The man who thought different written by Karen Bluementhal.
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