Boot fails with USB drive connected using GPT [Pogoplug E02]

[Ethereal]

I don't know where the uboot bug tracker is so I am posting this here:

How to reproduce:
Using pogoplug E02 with USB flash OS drive inserted, and USB external drive connected (3Tb seagate backup plus, single GPT partition), boot the pogoplug. In my configuration, the 3Tb drive is connected to the first queried USB port.

Expected behavior:
Boots from USB flash OS drive

Observed Behavior:
Hangs at the following stage:

$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)')
My off-the-cuff guess is that uBoot doesn't handle GPT formatted drives correctly when searching for "rescueme" or doesn't have in-built support for GPT and thus hangs. One workaround idea is to do a check for GPT and refuse to inspect if GPT is found.

[hydro]

$this->bbcode_second_pass_quote('Ethereal', 't')he 3Tb drive is connected to the first queried USB port.

$this->bbcode_second_pass_quote('hydro', '')$this->bbcode_second_pass_quote('Ethereal', 't')he 3Tb drive is connected to the first queried USB port.

[hydro]

I think u-boot was compiled without CONFIG_EFI_PARTITION.
http://git.denx.de/cgi-bin/gitweb.cgi?p ... b;f=README

[bferg88]

I believe I am observing this problem as well, but on the Pogoplug Series 4.

However, switching ports is not an option as it only boots from the connections on the top of the device -- one SATA, and the USB from which I am booting. Same as OP, I have a Seagate Backup Plus (1TB) ntfs-formatted that I would like to have plugged in at boot. I tested with an older external Seagate ntfs-formatted and it managed to work -- perhaps this is because it doesn't use the GPT style partition table(?).

Thanks much!

EDIT: I no longer believe my Seagate Backup+ uses the GPT style partition table, as I checked it using Windows 7 disk management tool.

EDIT: The only difference I have observed is that my Backup Plus uses USB 3.0.