What Is First Aid in Disk Utility on Mac?
First Aid is a free utility inDisk Utilityon Mac.
It acts likeCHKDSK/Fon Windows 10 andCheck File Systemin MiniTool Partition Wizard, a professionalpartition manager.
When Do you oughta Run First Aid from Recovery?
To repair the startup volume, run First Aid from Recovery.
you could clickShow Detailsto see more related information.
File system check exit code is 8
Or
Problems were found with the partition map which might prevent booting.
How to Run First Aid from Recovery?
It is not a single action to run First Aid from Recovery.
The whole process includes the following steps:
Now, we will introduce these steps in the following parts.
If not, youd better back up your Mac on site.
However, if your Mac wont start all the way, this method is unavailable.
you gotta resort to third-party software.
you’ve got the option to use Stellar Data Recovery for Mac.
This is professionalMac data recovery software.
you could run it on macOS Big Sur, Catalina, Mojave, etc.
you might go to MiniTool official site to get the Professional or more advanced edition according to your situation.
Note: The recovery drive creating process will erase all files on the USB drive.
You shouldback up the USB driveif there are important files on it.
Here, we will show you a full guide:
Stage 1: Create a Recovery Drive
1.
Connect a USB drive to a Mac that works normally.
Download and install Stellar Data Recovery for Mac on that Mac.
Use the license key you receive to register the software and enter its main interface.
Click theClick herelink (at the bottom left side of the software) to continue.
Then, click theCreate Recovery Drivebutton to continue.
Another interface pops up, reminding you of the consequences.
ClickOKif everything is prepared.
When the process ends, it will show you a prompt.
ClickOKto kill the prompt.
Unplug the USB drive from the Mac computer.
Stage 2: Rescue Your Mac Data
1.
Connect the USB recovery drive and the external storage drive to your unbootable MacBook.
Then, you’re able to also see the startup options window.
ThemacOS Utilitiesinterface appears (this is the Mac Recovery Mode).
it’s crucial that you selectStellarDataRecoveryand clickContinue.
You enter the software main interface.
it’s crucial that you pick the data key in you want to restore and click theNextbutton to continue.
If you want to recover all types, you could just turn on the button ofRecover Everything.
This software will show the drives it can detect on your Mac.
Then, you better pick the drive you want to recover data from.Deep Scanis not selected by default.
If you want to perform a deep scan, you better manually turn it on.
Click theScanbutton to start scanning the selected drive.
The scanning process will last for some minutes.
you gotta wait patiently until the whole process ends.
Then, a window will pop up, prompting you that the scanning completes.
it’s crucial that you click theOKbutton to close this window.
You will see the scan results.
Then, you gotta check the files you want to restore.
After selecting your needed files, click theRecoverbutton to continue.
Click theSavebutton to save the selected files.
Now your Mac files are saved to a safe location.
Step 2: Boot Your Mac into Recovery Mode
How to run First Aid from Recovery?
you better first pull up the Mac Recovery Mode.
We have mentioned it in the above part.
You will see some options in macOS Recovery Mode (macOS Utilities), including Disk Utility.
SelectDisk Utilityand clickContinueto access it.
Go toView > Show All Devices(from the menu bar or toolbar in Disk Utility).
you’re able to see all available disks and other storage devices in the Disk Utility sidebar.
go for the disk you want to repair.
it’s crucial that you pick the last volume on the disk to repair.
Step 4: Repair Your Mac Disk Using First Aid
1.
The First Aid button is on the top toolbar.
After selecting the target volume, you oughta click it to continue.
This utility will begin to check the selected disk.
When the process ends successfully, you will see the prompt for success.
ClickDoneto wrap up the prompt.
