Recover data from As/400 Drives

   If I have done BOTH of:
    a) Delete ASP Data
      - AND -
    b) booted to a SLIC CD and done Initialize and Format disks for all disks
   on a system.
    
   is there any possibilty, however remote, that data could be recovered from
   those disks?
    
   In other words if you had disks from your company that had been cleared in
   this manner would you be comfortable selling those disks on the used
   market?  I have a customer who believes that SOX says you cannot sell that
   stuff because data could be recovered. I think they have 100,000 times
   more exposure by having IT staff take backup tapes home in their car as
   off-site backups!
    
    - Larry