You can install and boot Oracle Solaris from a disk that is up to 2 TB in size. This support applies to the following systems:
SPARC platforms with an updated OBP. However, the SPARC boot loader remains unchanged.
x86 platforms that use GRUB 2 as the default system boot loader.
On both system types, the two-terabyte disk must be connected to a system with a minimum of 1.5 GB of memory.
With EFI (GPT) partitioning, all of the disk space on the boot device can be used for Oracle Solaris installations.
For more information, see Chapter 2, x86: Administering the GRand Unified Bootloader (Tasks), in Booting and Shutting Down Oracle Solaris 11.2 Systems .
Disk management utilities have been enhanced to accommodate this feature. For example, the fdisk utility can support up to 2-TB partitions. However, limits might be imposed on other non-EFI partitions. If you run the utility on a disk that is greater than 2TB in size, the utility warns you that you cannot create a non-EFI partition that is greater than 2 TB.