MacOS – Mac Could Not Restart After a Kernel Panic

hard drivekernel-panicmacbook promacos

I was forced to restart MacBook Pro when a kernel panic happened about 2 hours ago… Since then my computer would just stuck on the grey screen with the Apple logo every time I tried to reboot it. Some useful log appeared when I tried to boot it in Safe Mode and single user mode:

disk0s2: I/O error.

   0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [ErrType IO] [ErrNo 5] [IOType Read] [PBlkNum 24] [LBlkNum 2][FSLogMsgID 327376684] [FSLogMsgOrder First]

   0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode root_device] [MountPt /] [FSLogMsgID 327376684] [FSLogMsgOrder Last]

0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [ErrType IO] [ErrNo 5] [IOType Read] [PBlkNum 55232] [LBlkNum 763][FSLogMsgID 375551380] [FSLogMsgOrder First]

0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode root_device] [MountPt /] [FSLogMsgID 375551380] [FSLogMsgOrder Last]

0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [ErrType IO] [ErrNo 5] [IOType Read] [PBlkNum 55008] [LBlkNum 749][FSLogMsgID 299898203] [FSLogMsgOrder First]

0 [Level 3] [ReadUID 0] [Facility com.apple.system.fs] [DevNode root_device] [MountPt /] [FSLogMsgID 299898203] [FSLogMsgOrder Last]

That was when the booting process got stuck. The log seemed to suggest that there were problems with the disk i/o and mounting the file system.

To you experts:
Can you interpret what this means? Was this a hardware problem? Can you decide more specifically what the problem was? Do you have any suggestions of a potential fix?

Thanks,
Stephen

Best Answer

Chrisii has the right idea.. test the drive, as the error log shows "disk0s2: I/O error" which suggests a failing drive.

If the test finds no errors, then you may have a corrupted install. Reinstall from the recovery disc, and your data should be fine.

Cheers,

Dave

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