DataRecovery from U...
 
Notifications
Clear all

DataRecovery from USB-flash

10 Posts
5 Users
0 Reactions
899 Views
(@gremodic)
Eminent Member
Joined: 15 years ago
Posts: 24
Topic starter  

hi to all
in this days trying different tools this happen to me….
i use a 1Gb NTFS pendrive, after a simple complete format performed by windows7 i didn't found inside with the different carving/datarecovery tools
i try with encase foremost scalpel ontrack easy recovery get data back and other but i didn't found nothing od nothing….
my qeustion is…how is it possible? you think i have forget something?
thanks to all


   
Quote
(@rampage)
Reputable Member
Joined: 17 years ago
Posts: 354
 

the problem is "a simple COMPLETE format"

a complete format overwrites sectors,

since all data recovery softwares (and carvers) rely on files that were deleted or orphaned on the filesystem without being overwritten, with a complete format (or any activity that overwrites sectors) you won't be able to recover anything.


   
ReplyQuote
(@gremodic)
Eminent Member
Joined: 15 years ago
Posts: 24
Topic starter  

8| what? you are sure? is to simple delete all evidence files? i not do a wipe but a complete format by windows non with a professional eraser….i think this is strange


   
ReplyQuote
(@rampage)
Reputable Member
Joined: 17 years ago
Posts: 354
 

a single pass of overwrite is enaugh to make a file impossible to recover.


   
ReplyQuote
(@gremodic)
Eminent Member
Joined: 15 years ago
Posts: 24
Topic starter  

ok now i try a different things i do a rapid formatt and there is the same situation…what happened now?


   
ReplyQuote
(@mscotgrove)
Prominent Member
Joined: 17 years ago
Posts: 940
 

A quick format should be recoverable from.

As a simple exercise, fill the disk with jpegs, then a quick format. Then try a raw recovery, or data carving tool, this should find the jpegs. With a 1GB stick, and only a few files, the format may clear down the complete $MFT which will make traditional recovery / undelete techniques fail.

One point to note is how long the format takes. If it takes more than 1 min, it is probably doing a complete format (blanking each sector), less than 1 min, then it will just be rewriting indexes, MFTs etc


   
ReplyQuote
jhup
 jhup
(@jhup)
Noble Member
Joined: 16 years ago
Posts: 1442
 

If I understand correctly NAND gate based USB drive also have an issue how they write to the storage blocks. Before writing they must "erase" everything on the block in question . . . Rewrite or complete formats, nothing remains.

There was a thread somewhere here about that discussion.


   
ReplyQuote
jaclaz
(@jaclaz)
Illustrious Member
Joined: 18 years ago
Posts: 5133
 

For the record, the behaviour of windows format has changed.
Pre-Vista behaves one way, Vista and later behave DIFFERENTLY.

Here
http//www.msfn.org/board/index.php?showtopic=135781

Old behaviour
http//support.microsoft.com/kb/302686/en-us

New behaviour
http//support.microsoft.com/kb/941961/en-us

The format command behavior has changed in Windows Vista. By default in Windows Vista, the format command writes zeros to the whole disk when a full format is performed. In Windows XP and in earlier versions of the Windows operating system, the format command does not write zeros to the whole disk when a full format is performed.

jaclaz


   
ReplyQuote
(@gremodic)
Eminent Member
Joined: 15 years ago
Posts: 24
Topic starter  

ok ok and so from now i can't recover nothing from a vista formatted device?? or i can use other technics


   
ReplyQuote
(@rampage)
Reputable Member
Joined: 17 years ago
Posts: 354
 

if it's a full format, you cant recover anything


   
ReplyQuote
Share: