1. /boot/efi/ partition 问题
新建 efi 类型分区 大概100或200 貌似不限制。
2. "sda must have a GPT disk label" 问题
[Ctrl]+[Alt]+[F2] "shell prompt" 使用 parted 來手動改變硬碟為 GPT.
[anaconda root@localhost /]# parted /dev/sda
GUN Parted 2.1
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel
New disk label type?gpt
Warning: The existing disk label on /dev/sda will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No?Yes
(parted) q
Information: You may need to update /etc/fstab.
退出，重启 重新安装redhat 6，就OK了。