Hi all, based on my recent experience, i will share steps involved in case you want to explore how to repair your Mac machine (iMac / Macbook). Although it is a huge difference between Windows, the concept is almost similar but using different methods.
Mac doesn't boot to login screen / corrupted/ etc or similar issues:
To repair HDD in case disk corrupted, etc:
1. Reboot your Mac and press and hold Command + R key in your keyboard until the Apple logo appears and loads into a repair option window.
2. Once you see the repair selection window, select disk utility and continue.
3. On the next window, select the disk you wish to repair and click "first aid" button on top the window.
4. The selected disk will be checked for errors and repaired if possible.
5. You may exit the window and reboot your Mac once done.
Note: you may also select Reinstall Mac OS incase you suspect the OS is corrupted and it will reinstall your OS.
To repair HDD using CLI (command line interface):
1. Reboot your Mac and press and hold Command + S key in your keyboard until the Apple logo appears and loads into a command line interface. This will be considered single user mode in Mac.
2. Key in /sbin/fsck -fy and press enter. This will repair your disk and show the progress until complete.
3. Once it is complete, you may type the command reboot and press enter to reboot your Mac.
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