You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. Decide whether to erase (format) your disk When you see the utilities window, you have started up from macOS Recovery. Enter the requested password to continue. You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Reinstall the macOS that came with your Mac, or the closest version still available.
Upgrade to the latest macOS that is compatible with your Mac.
Reinstall the latest macOS that was installed on your Mac (recommended). Release the keys when you see an Apple logo, spinning globe, or other startup screen. To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. If a wireless network is available, you can choose it from the Wi-Fi menu, which is also available in macOS Recovery. All you need is a connection to the Internet. MacOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. Visit aka.ms/winfrhelp for the user guide. Let this app be your first choice for helping to find what you need from your hard drive, SSD (.limited by TRIM), USB drive, or memory cards. Recovering from a camera or SD card? Try Signature mode, which expands beyond NTFS recovery and caters to your storage device needs.Cisdem DataRecovery 3 is one of the most popular data recovery. Android data recovery mac free download - Free Mac Android Data Recovery, Jihosoft Android Data Recovery for Mac, Mac FoneLab Android Data Recovery, and many more programs.If the directory indicating where files were originally stored is. All data recovery apps work in a similar way.