I've dd "transcend-4G-4025483264-NewIT-v1.3-ubuntu-eSATA" image to my 4Gb SD card.
Then I've reconfigured uboot to boot from sd card using following commands:
setenv bootargs_console console=ttyS0,115200
setenv bootcmd_mmc 'mmc init; ext2load mmc 0:1 0x00800000 /uImage; ext2load mmc 0:1 0x01100000 /uInitrd'
setenv bootcmd 'setenv bootargs $(bootargs_console); run bootcmd_mmc; bootm 0x00800000 0x01100000'
saveenv
But when I boot my eSATA SheevaPlug I get the following error:
USB 0: host mode
PEX 0: interface detected no Link.
Net: egiga0 [PRIME], egiga1
Hit any key to stop autoboot: 0
## Error: "bootcmd_usb" not defined
## Booting image at 00800000 ...
Bad Magic Number
Please help…