Install CentOS 7 without VGA

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
    ...