UltraISO : ISO/Ubuntu/WinPE ===> U disk for boot
Write ISO/bootable into U disk, Note lable （CENTOS7 ）!! Windows length on Windows OS
Centos install cmdline
vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rd.live.check quiet
vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=CENTOS7 rd.live.check inst.gpt
Or
inst.stage2=hd:/dev/sdaX
Or
vmlinuz initrd=initrd.img linux dd （选择硬盘）
Refer to
Centos lable/U disk
https://blog.csdn.net/cm0821/article/details/53765573
GPT/Centos
https://blog.csdn.net/ruanhao1203/article/details/88030112
