Usually, when you switch a Mac computer on, a set of operations will start to boot the operating system for use. Sometimes however, your Mac machine refuses to start, which makes all data on this Mac computer inaccessible. In this situation, if you have important files on this Mac computer but don't have backups, it's really annoying because you have no idea why Mac computer becomes unbootable and how to recover data from unbootable Mac computers.
Read on to learn how to recover data from unbootable Mac computer.
Why Mac computer becomes unbootable?
Your Mac computer is unable to boot up when BIOS (a firmware that used to perform hardware initialization during the booting process) fails to recognize the Mac startup disk. It could result from unsuccessful system update, system crash, damaged MBR, or corrupted startup drive, etc.
How to recover data from unbootable Mac computer?
iBoysoft Mac Data Recovery is free Mac hard drive recovery software that can help you recover data from unbootable Mac hard drive. It can recover data from encrypted APFS boot/startup drive, recover deleted/lost data from APFS partition, recover data from formatted, unmountable, unreadable, inaccessible hard drives, external hard drives, USB flash drives, SD cards, memory cards, Pen drives, etc. on macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13/10.12 and OS X 10.11/10.10/10.9/10.8/10.7.
Though your Mac computer is unbootable, you can still recover data with iBoysoft Mac Data Recovery through the methods as below.
Solution 1: If you have only one Mac computer
If you have only one Mac computer which is unbootable right now, is it possible to recover files from this Mac still? Of course! You can run iBoysoft Mac Data Recovery from iBoysoft Server in Recovery Mode and recover lost data from the unbootable Mac computer. This approach is highly recommended because it is easier and more effective than others.
Note: Before you follow the steps below, you have to make sure your Mac has Internet connection.
- Press Command + Option + R keys to boot this Mac into Internet Recovery Mode.
- Click Utilities and select Terminal from the drop-down menu.
- Type in:
By running this command, iBoysoft Mac Data Recovery will be launched.
s='/private/var/tmp/boot.sh' && curl -o $s http://boot.iboysoft.com/boot.sh && chmod 777 $s && $s
- After launching iBoysoft Mac Data Recovery, you can choose the macOS volume and follow the wizard to recover your lost files.
Solution 2: If you have two Mac computers
Step 1: Download iBoysoft Mac Data Recovery on another Mac computer.
Step 2: Install and launch iBoysoft Mac Data Recovery.
Step 3: Click iBoysoft Data Recovery on menu bar and then select "Create Boot Drive".
Step 4: Insert a USB drive into your Mac computer.
Step 5: Follow the wizard to create a bootable recovery drive.
Step 6: After that, please insert iBoysoft Mac Data Recovery bootable USB drive into the unbootable Mac computer, and then press the Power button and Option key (⌥) to start the computer up.
Step 7: Select iBoysoft Mac Data Recovery from the boot options.
Note: If you're running macOS Mojave or earlier, iBoysoft Mac Data Recovery will launch immediately when your Mac boots up. But, if your Mac is running macOS Catalina, you need two additional steps to launch this program.
Step 8: Wait for your Mac to boot up, open "Terminal" application from "Utilities" drop-down menu.
Step 9: Run the following command:
Follow the wizard to scan for lost data on the unbootable Mac computer.
After recovering data from the unbootable Mac computer, you can go ahead to erase the Mac hard drive and reinstall macOS without worrying about data loss.