Install CentOS 7 without VGA

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Change timeout

  • vim isolinux/isolinux.cfg

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    default vesamenu.c32
    #timeout 600
    timeout 50

    display boot.msg

  • Prompt until booting automatically, in units of 1/10 s. In the case, we change the timeout value from 60 secs to 5 secs

Change default booting prompt

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...
label linux
  menu label ^Install Red Hat Enterprise Linux 7.3
  menu default
  kernel vmlinuz
  append initrd=initrd.img inst.stage2=hd:LABEL=RHEL-7_3\x20SE text console=tty0 console=ttyS0,115200n8
...
  • Please notice menu default

Remove quiet, append text console=tty0 console=ttyS0,115200n8 in kernel parameter

  • vim isolinux/isolinux.cfg
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    ...

    label linux
      menu label ^Install CentOS Linux 7
      menu default
      kernel vmlinuz
      append initrd=initrd.img inst.stage2=hd:LABEL=CENTOS\x207\x20X8 text console=tty0 console=ttyS0,115200n8

    ...