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Why am I Unable to Install My OS or Boot to a Partition Larger Than 2 TB?

The RAID Option ROM may report “no volumes handled by BIOS” when a >2 TB capacity volume is created.

With large capacity disk drives, users can reach the 2 TB boundary for physical drives and for bootable RAID volumes. The legacy BIOS master boot record (MBR) cannot handle physical drives larger than 2 TB or boot to a RAID volume greater than 2 TB.

An MBR has a partition table describing the partitions of a storage device. The maximum size of an MBR partition cannot exceed 2 TB (2.19 TB). MBRs are constrained by supporting only four main partitions and a volume size of less than 2 TB. These constraints inhibit their use in larger volume sizes.

For these large capacity physical drives, you can use the RAID BIOS console to configure them, but they may not display during POST when the RAID OpROM scan drives.

The user must enable uEFI optimized boot in the system BIOS and use a GUID Disk Partition Table (GPT) on an Intel® Hardware RAID Array under an uEFI environment to boot from them.

A GUID Partition Table (GPT) is a layout of the partition table that enables a disk partition to exceed the MBR maximum of 2.19 TB. For more information, see the GUID Partition Table (GPT) whitepaper. This paper describes how to install an OS using GPT on an Intel hardware RAID array under an uEFI environment.

This applies to:

Intel® Integrated RAID Module RMS25CB040
Intel® Integrated RAID Module RMS25CB080
Intel® Integrated RAID Module RMS25JB040
Intel® Integrated RAID Module RMS25JB080
Intel® Integrated RAID Module RMS25KB040
Intel® Integrated RAID Module RMS25KB080
Intel® Integrated RAID Module RMS25PB040
Intel® Integrated RAID Module RMS25PB080
Intel® Integrated RAID Module RMS2AF040
Intel® Integrated RAID Module RMS2AF080
Intel® Integrated RAID Module RMS2LL040
Intel® Integrated RAID Module RMS2LL080
Intel® Integrated RAID Module RMS3CC040
Intel® Integrated RAID Module RMS3CC080
Intel® Integrated RAID Module RMS3HC080
Intel® Integrated RAID Module RMS3JC080
Intel® Integrated RAID Module RMT3CB080
Intel® Integrated RAID Module RMT3PB080
Intel® RAID Controller RS25AB080
Intel® RAID Controller RS25DB080
Intel® RAID Controller RS25FB044
Intel® RAID Controller RS25NB008
Intel® RAID Controller RS25SB008
Intel® RAID Controller RS2BL040
Intel® RAID Controller RS2BL080
Intel® RAID Controller RS2MB044
Intel® RAID Controller RS2PI008
Intel® RAID Controller RS2SG244
Intel® RAID Controller RS2VB040
Intel® RAID Controller RS2VB080
Intel® RAID Controller RS2WC040
Intel® RAID Controller RS2WC080
Intel® RAID Controller RS2WG160
Intel® RAID Controller RT3WB080

Solution ID: CS-033697
Last Modified: 13-Mar-2015
Date Created: 31-Jul-2012
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