I have a Dell Poweredge r710 server with five 1 TB disks. All of them are in RAID 5. I was trying to install Centos but it says “Your boot partition is on disk using GPT Partition…”
I read somewhere that centos can’t install on a disk larger than 2TB, so I made some partitions smaller, but it’s not working.
PS, I am going to install Proxmox on that, but Proxmox also won’t accept disks larger than 2TB.
EL5 didn’t really support GPT partitions. Support for GPT was added in EL6, which was released after you wrote this question..
On EL6, if your system uses a legacy BIOS, then you can only use GPT on drives other than the boot drive; the boot drive must still use MBR. If you want to use GPT on your boot drive, your server/workstation must have UEFI.
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