Pogoplug E02 won't boot in certain usb drive config

[Ethereal]

When I have my usb hard drive (3tb WD) connected as well as my boot USB flash drive, and presumably uboot finds the WD drive first, uboot gets stuck at the rescueme step. The following is the entirety of netconsole output:

$this->bbcode_second_pass_code('', 'U-Boot 2011.12 (Feb 20 2012 - 21:21:59)
Pogoplug E02
arm-none-linux-gnueabi-gcc (Sourcery G++ Lite 2009q3-67) 4.4.1
GNU ld (Sourcery G++ Lite 2009q3-67) 2.19.51.20090709
Hit any key to stop autoboot: 0
(Re)start USB...
USB: Register 10011 NbrPorts 1
USB EHCI 1.00
scanning bus for devices... 4 USB Device(s) found
scanning bus for storage devices... 2 Storage Device(s) found
Loading file "/rescueme" from usb device 0:1 (usbda1)')

With the flash usb only or in some other usb port configs with both devices, it boots fine.

Any ideas?

Here is my environment:

$this->bbcode_second_pass_code('', 'Pogoplug:~$ /usr/sbin/fw_printenv
ethact=egiga0
bootdelay=3
baudrate=115200
mainlineLinux=yes
console=ttyS0,115200
led_init=green blinking
led_exit=green off
led_error=orange blinking
mtdparts=mtdparts=orion_nand:1M(u-boot),4M(uImage),32M(rootfs),-(data)
mtdids=nand0=orion_nand
partition=nand0,2
stdin=serial
stdout=serial
stderr=serial
rescue_installed=0
rescue_set_bootargs=setenv bootargs console=$console ubi.mtd=2 root=ubi0:rootfs ro rootfstype=ubifs $mtdparts $rescue_custom_params
rescue_bootcmd=if test $rescue_installed -eq 1; then run rescue_set_bootargs; nand read.e 0x800000 0x100000 0x400000; bootm 0x800000; else run pogo_bootcmd; fi
pogo_bootcmd=if fsload uboot-original-mtd0.kwb; then go 0x800200; fi
force_rescue=0
force_rescue_bootcmd=if test $force_rescue -eq 1 || ext2load usb 0:1 0x1700000 /rescueme 1 || fatload usb 0:1 0x1700000 /rescueme.txt 1; then run rescue_bootcmd; fi
ubifs_mtd=3
ubifs_set_bootargs=setenv bootargs console=$console ubi.mtd=$ubifs_mtd root=ubi0:rootfs rootfstype=ubifs $mtdparts $ubifs_custom_params
ubifs_bootcmd=run ubifs_set_bootargs; if ubi part data && ubifsmount rootfs && ubifsload 0x800000 /boot/uImage && ubifsload 0x1100000 /boot/uInitrd; then bootm 0x800000 0x1100000; fi
usb_scan=usb_scan_done=0;for scan in $usb_scan_list; do run usb_scan_$scan; if test $usb_scan_done -eq 0 && ext2load usb $usb 0x800000 /boot/uImage 1; then usb_scan_done=1; echo "Found bootable drive on usb $usb"; setenv usb_device $usb; setenv usb_root /dev/$dev; fi; done
usb_scan_list=1 2 3 4
usb_scan_1=usb=0:1 dev=sda1
usb_scan_2=usb=1:1 dev=sdb1
usb_scan_3=usb=2:1 dev=sdc1
usb_scan_4=usb=3:1 dev=sdd1
usb_device=0:1
usb_root=/dev/sda1
usb_rootfstype=ext2
usb_rootdelay=10
usb_set_bootargs=setenv bootargs console=$console root=$usb_root rootdelay=$usb_rootdelay rootfstype=$usb_rootfstype $mtdparts $usb_custom_params
usb_bootcmd=run usb_init; run usb_set_bootargs; run usb_boot
usb_boot=mw 0x800000 0 1; ext2load usb $usb_device 0x800000 /boot/uImage; if ext2load usb $usb_device 0x1100000 /boot/uInitrd; then bootm 0x800000 0x1100000; else bootm 0x800000; fi
bootcmd=usb start; run force_rescue_bootcmd; run ubifs_bootcmd; run usb_bootcmd; usb stop; run rescue_bootcmd; run pogo_bootcmd; reset
ethaddr=00:25:31:03:03:A3
arcNumber=2097
serverip=10.0.1.119
if_netconsole=ping $serverip
ipaddr=10.0.1.118
preboot=run if_netconsole start_netconsole
start_netconsole=setenv ncip $serverip; setenv bootdelay 10; setenv stdin nc; setenv stdout nc; setenv stderr nc; version;
usb_init=run usb_scan; setenv usb_root LABEL=ROOTFS
usb_custom_params=loglevel=7 netconsole=6666@10.0.1.118/eth0,6666@10.0.1.119/08:00:27:15:E8:06')

[moonman]

Does your flash drive have any of these files in the root of the device: rescueme, rescueme.txt

Insert your boot device into the very bottom usb port at the back. It gets initialized first

[Ethereal]

$this->bbcode_second_pass_quote('moonman', 'D')oes your flash drive have any of these files in the root of the device: rescueme, rescueme.txt

Insert your boot device into the very bottom usb port at the back. It gets initialized first

[pepedog]

I think you want a hybrid mbr
viewtopic.php?f=18&t=2611&start=30#p14953

[Ethereal]

$this->bbcode_second_pass_quote('pepedog', 'I') think you want a hybrid mbr
viewtopic.php?f=18&t=2611&start=30#p14953

[WarheadsSE]

You assume the built uboot has knowledge of GPT.

[Ethereal]

$this->bbcode_second_pass_quote('WarheadsSE', 'Y')ou assume the built uboot has knowledge of GPT.