How to Set progress bar not displayed when CentOS starts the system

How to Set progress bar not displayed when CentOS starts the system

Test version: Centos6.6

Edit the grub STARTUP configuration file:

# Vi/boot/grub. conf or/etc/grub. conf soft connection file. The content of the two files is the same.

Delete the last "rhgb" of the kernel row and exit. After deletion, the system progress bar is not displayed after restart;

If you delete only "quiet", the progress bar is displayed. If you delete both "rhgb quiet", the progress bar is not displayed;

Another method:

Press e in the boot menu

Press e to enter the interface and select the second line of kernel

Press e to enter the kernel command line, delete "rhgb", Press enter to return to the upper menu, and press B to start the system.

This operation takes effect only once. After the computer is restarted, it is still based on the/etc/grub. conf configuration file;

Rhgb indicates redhat graphics boot, that is, the image is displayed to replace the text information displayed during the startup process. After the startup, you can also see the information in dmesg.
Quiet indicates that only important information is displayed during startup. Messages similar to hardware self-check are not displayed.