Use Xebec
If the first byte has the top bit set then it means that the remaining three bytes are a disc address. The first time we called Request Sense, the disc address was 6, which would suggest that sectors 0 to 6 have been read by ADFS, as they are on a mount, but an error resulted. The second time the sense information reports disc address 1, which would be the second and final block of the ADFS free space map. So it's possible that the sense data makes sense.