After running Disk Utility First Aid on my MacBook Pro (macOS Sierra), I get the following message: "First Aid found corruption that needs to be repaired. To repair the startup volume, run First Aid from Recovery."
What does this mean? What do I do next?
UC1975
MacBook Pro, macOS Sierra (10.12)
You have corruption on your disk drive which must be repaired. If you don't repair this corruption you stand a good chance of losing all data on the disk drive.
You have two alternatives to fix the corruption or use DiskWarrior. To use either alternatives, you first must backup everything.
It means you startup from recovery partition and use Disk Utility from there.
About macOS Recovery
https://support.apple.com/HT201314
Regards,
H
To HT201560:
My previous post in this thread read: The Macworld link that you posted is from July 2016. Since then, macOS Sierra has become available. Disk Utility in macOS Sierra presents different options than was the case under the previous operating system. The Disk Utility prompt currently states: "To repair the startup volume, run First Aid from Recovery." However, the Recovery button in Disk Utility is not live (dead link). Question: How do I run First Aid from Recovery?
A correction follows: In fact, I see no Recovery button in Disk Utility. I do see a Restore button, which is dead.
UC1975
I have the same problem with several of my external hard drives (they run iTunes libraries). They regularly dismount themselves from the computer to which they’re connected. When I run Disk Utility’s First Aid, it tells me to reboot to Recovery and do it again. So I do. And it tells me to reboot to Recovery and do it again. It doesn’t fix any problems; it doesn’t even tell me what the problems ARE.
Now what?
Hi Hiroto, i have this message when doing first aid on Running First Aid on “TOSHIBA MK5065GSXF Media"
First Aid found corruption that needs to be repaired. To repair the startup volume, run First Aid from Recovery. Click Done to continue.
I tried to restart the computer from first -
clicking apple logo(as specified)
then system preferences
then- startup disk
however it just brings me back to the same issue. i try disk utility and click first aid again on toshiba and
get the same message.
have i missed something?
I have backed up everything to an external hard drive. What specific steps must I take to fix the corruption on the disk drive?
UC1975
Reformat - http://www.macworld.co.uk/how-to/mac/how-format-storage-drive-for-mac-usb-354175 8/
DiskWarrior - http://www.joyofmacs.com/cookbook/diskwarrior/
It is your choice as to how you want to do it. DiskWarrior is easy but expensive.
To HT201560:
The Macworld link that you posted is from July 2016. Since then, macOS Sierra has become available. Disk Utility in macOS Sierra presents different options than was the case under the previous operating system. The Disk Utility prompt currently states: "To repair the startup volume, run First Aid from Recovery." However, the Recovery button in Disk Utility is not live (dead link). Question: How do I run First Aid from Recovery?
UC1975
To Hiroto,
Your instructions and the link that you provided enabled me to repair the corruption on the disk drive. My laptop is running at an appreciably faster speed than before. Thanks so much!
UC1975
Mine's doing the same thing. Running when the drive is booted says it's corrupt. Running from Recovery says it's fine. What got me to this issue was being unable to sync my 256GB iPhone to iTunes 'cause I don't have enough space (purgeable + free is over 400GB).
You're welcome! 🙂
Hi Hiroto,
I have experienced the same however when I run first aid from recovery, it doesn't seem to pick up the curruption.
message deleted
Disk Utility Prompt: Run First Aid from Recovery.
