[CentOS] CentOS 6.6 64-bit won't install on a 3 TB disk

Tue Jan 13 17:57:15 UTC 2015
Steve Clark <sclark at netwolves.com>

On 01/13/2015 12:47 PM, Gordon Messmer wrote:
>> I'm having an issue getting a C6.6 install to work on a 3 TB dual hard
>> drive system, raid 0. I'm hoping that someone here can help.
> 1: Is this system booting UEFI or BIOS?
> 2: Is the disk partitioned with MBR or GPT?
> 3: Is /boot on its own partition?
> 3TB drives are larger than MBR and BIOS properly support, so they're
> only really expected to work on a system partitioned with GPT and
Not exactly true - they work fine with an MBR but you can access 2/3 of the drive.
Also it is not necessary to use UEFI to boot.

You can have a fakeout mbr that is used for a standard bios boot.

# fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

    Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1      267350  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.
Tue Jan 13 12:55:21 EST 2015

# parted -l
Model: ATA WDC WD30EFRX-68E (scsi)
Disk /dev/sda: 3001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End     Size    File system     Name     Flags
  1      1049kB  2097kB  1049kB                  bbp      bios_grub
  2      2097kB  1002MB  1000MB  ext3            primary
  3      1002MB  5002MB  3999MB  linux-swap(v1)  primary
  4      5002MB  3001GB  2996GB  ext4            primary

> booting via UEFI.  And in that case, /boot and /boot/efi need to be
> individual partitions.

Stephen Clark
*NetWolves Managed Services, LLC.*
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com