来了几台IBM X系统的服务器，大部分都是配的大硬盘，比如有两台的硬盘、做的RAID及要装的操作系统如下：

A：SATA 1T   * 16 15块RAID 5+1块热备 Oracle Linux 5.9

B：SAS  600G * 7  6 块RAID 5+1块热备 RHEL 6.2

B安装系统中分区时，提示：

 

   
   
   
   
    
    
    
    
    
  1. sda must have a GPT disk 
    2.

 

而A在安装系统中分区时，提示：

   
   
   
   
    
    
    
    
    
  1. Your boot partition is on a disk using the GPT partitioning Scheme but this machines cannot boot using GPT. 
    2.

 

均无法继续下一步。

A的解决方法找到了一个，还未测试，先把网址放在这里：

http://www.ha97.com/5365.html

 

B的解决方法为：

选择RHEL默认的分区进行分区，分完后退出安装程序，重启之后再自定义分区即可。

A测试这个方法则不可行。

此方法的原始文字：

Just wanted to let you know that we solved the problem. I have detailed the steps below:

1.) The need for the "GPT Disk Label" was still there but we worked around the problem by first choosing one of the default setups for RHEL6. We let the default-setup format and prepare the file-system as it pleased and I am guessing that it created a "GPT Disk Label" for our disk.

2.) Once it had created and formatted the partitions, we just canceled the setup and rebooted the server. At this stage, my guess would be that the RHEL6 setup did everything that was necessary to prepare the file-system -- including creating a "GPT Disk Label".

3.) After rebooting, we simply entered setup again and choose the 'custom installation' and created partitions according to our specifications.

4.) Hitting the next button did the trick and we got to the next stage of installation.

Thanks for everyone for helping out...

原文链接：

http://www.linuxquestions.org/questions/linux-server-73/sda-must-have-a-gpt-disk-label-error-while-installing-rhel6-ibm-x3650-m3-server-875450/