The solution of CentOS boot card in the progress bar

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CentOS gets stuck in the progress bar when it boots up and can't get in

I can't see where the boot card is, so I have to restart and press the "e" key to enter the boot menu:

Then press e to edit the first item:

Then move to the second kernel... Then press e to enter edit

Remove the words rhgb quiet

Press Enter to save back to selection

Press b to activate it, and you can see the activation process.

Notice where it gets stuck during start-up. You can press the f5 key progress bar/command line interface mode switch, confirm the card problem after processing, such as my card on the boot boot MySQL, has not been able to enter the system, so you can use the single user mode to enter the system MySQL startup item after closing the system there is no problem.

Enter single-user mode and add 1 to the end of the following operating mode

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