I have the same problem with ubuntu 10.10, the error is 66 bios.
Same problem, but we don't now why exactly. The only thing we now is unplugging our external drive makes the error diseappear. The manual doesn't say anything about that. Tell us if you find out something. We will do the same in case.
The D410PT board uses BIOS MOPNV10N.86A which is also used by the D510MO board (only since v0400 - previously D510MO used 10J series BIOSes).
So you should look at this thread:
The bad news is that even the latest version (0501) still has USB-related boot failures (at least with D510MO, you could recheck for D410PT). You _might_ not have the irreversible-upgrade problem of the D510MO because D410PT has always been on the 10N series.
Had the same issue. Is resolved by using another USB device. In my case the SanDisk Cruzer 8 Gb didn't work with 66 BIOS error code. Using a Transcend 700 it worked and some other USB stick as well. YMMV