Can't boot from large usb harddrive

[runge]

I've recently installed debian lenny on my sheevaplug using the instructions from Martin Michlmayr at http://www.cyrius.com/debian/kirkwood/sheevaplug/unpack.html
I used a small external USB harddrive (a 40 Gb 2,5'' disc) - no problems.

But when I try the same thing using a 1 TB external usb disc, the plug won't find any usable partitions to boot.
I've installed lenny on the first primary partition. The partition works fine from my desktop box.

--- snip from seriel output after reset ---

Hit any key to stop autoboot:  0 
(Re)start USB...                 
USB:   scanning bus for devices... 2 USB Device(s) found
       scanning bus for storage devices... T T T T 1 Storage Device(s) found
** Bad partition 1 **                                                       
** Bad partition 1 **                                                       
## Booting image at 00400000 ...           
Bad Magic Number                                                           
Marvell>>


--- snip end ---

Any suggestions?

/Svend

[Tom]

I use a 500GB USB HDD and had similar messages until I formatted the rootfs with 128bit Inodes (I use ext3 but I assume ext2 will also work).