passwd root
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reboot
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esc
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2
3
Linux16 /vmlinuz-3.10.0-229.e17x86_64 root-/dev/mapper/centos-root ro\ rd.lvm.lv-centos/root
修改后的结果为
Linux16 /vmlinuz-3.10.0-229.e17x86_64 root-/dev/mapper/centos-root rw init=/sysroot/bin/sh rd.lvm.lv-centos/root
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ro修改为 rm init=/sysroot/bin/sh
1
ctrl+x
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chroot /sysroot
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passwd root
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touch /.autorelabel
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exit
1
reboot