[dba-Tech] Retrieving Deleted Files off a hard drive

Martin Reid mwp.reid at qub.ac.uk
Fri Aug 1 04:04:42 CDT 2003


RE: [dba-Tech] Retrieving Deleted Files off a hard driveAFAIK unless you overwrite the data several time using specific software then its possible to get most things back. One of our guys says the only way to be totally sure is to melt down the HDD.

Martin
  ----- Original Message ----- 
  From: Jon Tydda 
  To: 'Discussion of Hardware and Software issues' 
  Sent: Friday, August 01, 2003 9:45 AM
  Subject: RE: [dba-Tech] Retrieving Deleted Files off a hard drive


  I formatted a hard disk with windows 95 on it, then plugged it into a pc running 98. I ran scandisk and all the files came back, so I guess format ain't everything.



  Jon 

  -----Original Message----- 
  From: Stoker, Kenneth E [mailto:Kenneth.Stoker at pnl.gov] 
  Sent: 31 July 2003 20:50 
  To: dba-Tech (E-mail) 
  Subject: [dba-Tech] Retrieving Deleted Files off a hard drive 



  Everyone, 

  I recently had a discussion with a coworker about the subject of retrieving deleted files off a hard drive.  We got on the subject because we are having an audit on those company-owned computers systems that some staff may have at home for business use.  He claims that any file can be reclaimed, even if a defragmentation has been run.  I thought that once a disk has been defragmented, those files were truly gone, if the anyone defragmented the disk, the audit would basically be a waste of time.  Is this true?  The computer security group here is, I'm sure, quite good, don't let any limitations be considered in any advise returned to settle this score.  

  If it is possible, does that also apply to a reformatted disk?  I would think that a reformatted disk would be the ultimate cleanup, but that would have me wondering now if a defragment doesn't work.  Which would cause some serious concerns at this location as much of the stuff that I work with is very sensitive and would make me wonder about correct processes when buying a new machine and excessing the old one.

  Thanks for your help in settling the discussion. 



  Ken Stoker 
  Technology Commercialization 
  Information Systems Administrator 
  PH: (509) 375-3758 
  FAX: (509) 375-6731 
  E-mail:  Kenneth.Stoker at pnl.gov 



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