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Knowledge Base

Installing or Upgrading to ESXi 6.7 Update 1 on Apple Mac Pro 6,1 Fails with "Mutiboot buffer is too small" (59660)

Last Updated: 11/17/2018Categories: TroubleshootingTotal Views: 8030Language:
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Symptoms

Booting the ESXi 6.7 Update 1 installer for a new installation may fail.  The installation upgrade may succeed, but booting from disk may then fail.

The following error message in encountered:

Shutting down firmware services...
Mutiboot buffer is too small.
Unrecoverable error

Note: This can also impact other non-supported Apple Hardware

Cause

Updated System Firmware is preventing the ESXi bootloader from functioning properly.

Resolution

There is currently not a workaround for upgrading to ESXi 6.7 Update 1 on Apple Mac Pro 6,1. It is currently not recommended to upgrade to ESXi 6.7 Update 1 on the Apple Mac Pro 6,1.

If an upgrade was already performed, it may be possible to restore the system with the previous working version of ESXi.  If the following does not work, a re-installation of the previous version of ESXi will be required.

 Download http://downloads.sourceforge.net/refit/refit-bin-0.14.tar.gz

Uncompress the REFIT download and transfer the files from the extracted directory to a FAT32 formatted USB key.

Rename \efi\refit to \efi\boot

Rename \efi\boot\refit.efi to \efi\boot\bootx64.efi

Reboot, hold Option key, select UEFI shell (it has a terminal icon).

Once the Shell is running, find the boot.cfg files for the two ESXi bootbanks.  For example:

Shell> dir fs0:\boot.cfg
File Not Found

Shell> dir fs1:\boot.cfg
File Not Found

Shell> dir fs2:\boot.cfg
10/05/18 05:08p 3,173 boot.cfg

Shell> dir fs3:\boot.cfg
10/05/18 05:08p 3,173 boot.cfg

Edit each file to add the line norts=1

Shell> fs2:
fs2:\> edit boot.cfg

fs2:\> fs3:
fs3:\> edit boot.cfg

The file should look similar to the below example after adding the new entry:

bootstate=0
kernel=tboot.b00
kernelopt=installerDiskDumpSlotSize=2560 no-auto-partition
modules=b.b00 --- jumpstrt.gz --- useropts.gz --- features.gz --- k.b00 --- chardevs.b00 --- a.b00 --- user.b00 --- uc_intel.b00 --- uc_amd.b00 --- sb.v00 --- s.v00 --- ata_liba.v00 --- ata_pata.v00 --- ata_pata.v01 --- ata_pata.v02 --- ata_pata.v03 --- ata_pata.v04 --- ata_pata.v05 --- ata_pata.v06 --- ata_pata.v07 --- block_cc.v00 --- bnxtnet.v00 --- brcmfcoe.v00 --- char_ran.v00 --- ehci_ehc.v00 --- elxnet.v00 --- hid_hid.v00 --- i40en.v00 --- igbn.v00 --- ima_qla4.v00 --- ipmi_ipm.v00 --- ipmi_ipm.v01 --- ipmi_ipm.v02 --- ixgben.v00 --- lpfc.v00 --- lsi_mr3.v00 --- lsi_msgp.v00 --- lsi_msgp.v01 --- lsi_msgp.v02 --- misc_cni.v00 --- misc_dri.v00 --- mtip32xx.v00 --- ne1000.v00 --- nenic.v00 --- net_bnx2.v00 --- net_bnx2.v01 --- net_cdc_.v00 --- net_cnic.v00 --- net_e100.v00 --- net_e100.v01 --- net_enic.v00 --- net_fcoe.v00 --- net_forc.v00 --- net_igb.v00 --- net_ixgb.v00 --- net_libf.v00 --- net_mlx4.v00 --- net_mlx4.v01 --- net_nx_n.v00 --- net_tg3.v00 --- net_usbn.v00 --- net_vmxn.v00 --- nhpsa.v00 --- nmlx4_co.v00 --- nmlx4_en.v00 --- nmlx4_rd.v00 --- nmlx5_co.v00 --- ntg3.v00 --- nvme.v00 --- nvmxnet3.v00 --- ohci_usb.v00 --- pvscsi.v00 --- qedentv.v00 --- qfle3.v00 --- qflge.v00 --- qlnative.v00 --- sata_ahc.v00 --- sata_ata.v00 --- sata_sat.v00 --- sata_sat.v01 --- sata_sat.v02 --- sata_sat.v03 --- sata_sat.v04 --- scsi_aac.v00 --- scsi_adp.v00 --- scsi_aic.v00 --- scsi_bnx.v00 --- scsi_bnx.v01 --- scsi_fni.v00 --- scsi_hps.v00 --- scsi_ips.v00 --- scsi_isc.v00 --- scsi_lib.v00 --- scsi_meg.v00 --- scsi_meg.v01 --- scsi_meg.v02 --- scsi_mpt.v00 --- scsi_mpt.v01 --- scsi_mpt.v02 --- scsi_qla.v00 --- shim_isc.v00 --- shim_isc.v01 --- shim_lib.v00 --- shim_lib.v01 --- shim_lib.v02 --- shim_lib.v03 --- shim_lib.v04 --- shim_lib.v05 --- shim_vmk.v00 --- shim_vmk.v01 --- shim_vmk.v02 --- smartpqi.v00 --- uhci_usb.v00 --- usb_stor.v00 --- usbcore_.v00 --- vmkata.v00 --- vmkplexe.v00 --- vmkusb_t.v00 --- vmkusb.v00 --- vmw_ahci.v00 --- xhci_xhc.v00 --- emulex_e.v00 --- btldr.t00 --- weaselin.t00 --- esx_dvfi.v00 --- esx_ui.v00 --- lsu_hp_h.v00 --- lsu_lsi_.v00 --- lsu_lsi_.v01 --- lsu_lsi_.v02 --- lsu_lsi_.v03 --- native_m.v00 --- rste.v00 --- vmware_e.v00 --- vsan.v00 --- vsanheal.v00 --- vsanmgmt.v00 --- xorg.v00 --- imgdb.tgz --- state.tgz
build=6.7.0-8169922
updated=1
norts=1
​​

Restart the system in REFIT by clicking on the "Up Arrow" icon or manually power cycling the system.

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