earl,
If it's a GoFlex Home then try UART booting:
http://forum.doozan.com/read.php?3,7852,7852
And you can use uBoot image from this thread for UART booting:
http://forum.doozan.com/read.php?3,12381
After verifying that it booted, put this rootfs on a USB thumb drive:
http://forum.doozan.com/read.php?2,12096
If everything boots OK into Debian, then while in Debian, flash this uBoot to NAND.
If it's a GoFlex Home then try UART booting:
http://forum.doozan.com/read.php?3,7852,7852
And you can use uBoot image from this thread for UART booting:
http://forum.doozan.com/read.php?3,12381
After verifying that it booted, put this rootfs on a USB thumb drive:
http://forum.doozan.com/read.php?2,12096
If everything boots OK into Debian, then while in Debian, flash this uBoot to NAND.