[CentOS] GRUB 2 dumps to grub prompt when installed on >4TB disk

Thu Aug 18 17:57:44 UTC 2016
James A. Peltier <jpeltier at sfu.ca>

Hi All,

I have a Dell R710 that has 6x1TB in a RAID-5 configuration.  When installing CentOS 7 using the full disk capacity and booting in UEFI mode the machine dumps me into a GRUB rescue mode prompt.

  error: disk `,gpt2' not found
  Entering rescue mode...
  grub rescue>

If I use the PERC RAID controller to make the disk smaller ROOTDISK volume of 100GB in size and then a DATA volume of the rest of the disk the system boots just fine so this seems like a GRUB2 issue.  Any thoughts?

James A. Peltier
IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone   : 604-365-6432
Fax     : 778-782-3045
E-Mail  : jpeltier at sfu.ca
Website : http://www.sfu.ca/itservices
Twitter : @sfu_rcg
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