Troubleshoot CentOS boot card in progress bar problem tutorial

CentOS is stuck on the progress bar when the boot is on.

This does not see the boot boot card where, had to restart and hold the "E" key to enter the boot menu:

Then press E to edit the first item:

Then move to the second item kernel ... Then press e to enter the editor

Remove rhgb quiet words

Press ENTER to save back to the selection

Press b to start it and you'll see the boot process.

Notice where the card is during the boot process? Can press F5 key progress bar/Command line interface mode switch , confirm card problem after processing, such as my card in the boot on the MySQL, has been in the system, so you can use Single-user mode into the system to shut down the MySQL startup after the system has no problem.

Enter Single-user mode and add 1 to the following mode of operation.