they are not true low level formats
I have recovered info on a 2X format
have you ever seen how fast a OS formats a drive
compare that to 1 single write 0"s to drive
my last format for ntfs on 10gb partition was like 2 min
it takes about 30 min to 0 wipe same amount
last year I did a clients 80gb it took over 3 hrs with a 1.5ghz cpu and 512 memory
some wipes take well over 6 hrs with standard equipment.
Logicube makes some nice erasers,wonder if my budget can handle one