[Mac] This exception occurs. Change the hard disk...

** Rebuilding catalog B-tree

Disk0s2: I/O Error

See. The method for starting this interface is to press command + s at startup to enter the single-user mode. When an interface like the DOS system appears, enter the command:/sbin/fsck-fy.

The operation mode of the disk's single user mode is shutdown. Press command + R to start the disk until the apple logo is displayed. Select "Disk utility ".

Finally, I took it for repair. I couldn't make an appointment on the official website. I ran the yitian direct store in Shenzhen directly. I 'd like to wait before opening the door. After opening the door, I went directly to the store clerk to make an appointment.

After changing the hard disk, we will notify you to repair it one day later.

In addition, add a method found on the Internet to slow down the Mac host. The process is as follows:
1. Run "ApplicationProgram"The disk tool in the" utility "below;
2. Find the hard disk you are using on the Left bar and select it
3. Execute "Repair Disk Permissions" under "first aid" on the right side, and then wait patiently for a few minutes and then OK.

Using Mac Pro book for one year, I personally feel that it is much more inconvenient than window, and the improper operations on users are much more brittle than window. I personally suspect that this hard drive problem is caused by forced shutdown in an abnormal state.