diff --git a/xCAT-nbroot2/installkernel b/xCAT-nbroot2/installkernel
index 5c157ebe8..8c5a1b39a 100755
--- a/xCAT-nbroot2/installkernel
+++ b/xCAT-nbroot2/installkernel
@@ -3,3 +3,4 @@ instmods nfs sunrpc
 instmods e1000 e1000e virtio_net igb ines mlx4_en cxgb3 cxgb4 tg3 bnx2 bnx2x bna ixgb qlge mptsas mpt2sas ata_piix megaraid_sas virtio_blk ahci ibmaem xhci-hcd sd_mod pmcraid be2net ext3 ext4 btrfs reiserfs usb_storage scsi_wait_scan kvm kvm-intel kvm-amd ipmi_si ipmi_devintf
 instmods macvlan macvtap 8021q bridge bonding vmxnet3 acpi-cpufreq powernow-k8 cdc_ether
 instmods mptctl #LSI firmware management requires this
+instmods mlx4_ib ib_umad #make the mellanox ib available enough to examine /sys