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Topic : "question about hard drive data recovery." |
Popeye
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Joined: 16 Jun 2002
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Location: La
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 Posted: Sun Apr 09, 2006 11:04 pm |
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hi all,
i am a pc user and for some reasons i have to use a mac for scanning some stuff. i brought my firewire-external hd and plug it on to the mac. i clearly remember that i saved the file on to the external hd. but then i turn it off, and unplugged it. and an warning of improper disconnection popped up . it said date loss might happened. when i got home and put my ext hd back to my computer, a window said ' hard drive is not formated, do you want to format it now' popped up. shit..i dont know if i lose all the data but it is pretty obvious that i have to format it in order to read it..which means that i have to earse all the data.. i click in to the format opinion and the capcity is only 186G( my drive is 250G). it seems like the data is still there but i just couldnt read it..
any suggestion of what i should do? i only have part of the data backed up in my other ext hd..i really do want to recover them. |
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B0b
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| Posted: Mon Apr 10, 2006 1:59 am |
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sounds like the drive wasn't formated in FAT32 but in HFS - dont do anyting to do the drive and stick it back on your Mac, then use Norton Disk Doctor to recover the data..
then when you've recovered the lost data - re-format the dirve from your Mac in FAT32
never let XP auto format a drive.. always use Disk Management in your administrative tools - you'll find it in Computer Management.. |
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Popeye
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| Posted: Mon Apr 10, 2006 2:07 am |
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hey bob thanks..
when i first unplugged the drive from the mac it has that data warning..i quickly put it back and it has a pop up said ' the hard drive is not readable ' something like that..does it sound normal? too bad that i dont have a mac and i cant really fix it at this moment...
so i just formated it( i know i am being impatient and silly) on xp and the 70G data is still there but i just have no access..can i still use the same method to recover it? |
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B0b
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| Posted: Mon Apr 10, 2006 11:21 am |
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| i haven't used Norton's in 5 years - so have no idea if the new verson on the Mac will recover a drive thats been hit with a windows format - but its worth a go .. |
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cheney
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| Posted: Wed Apr 19, 2006 2:33 pm |
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Something that always works in the military is to put child pornography on your hard drive. Then no matter how bad you screw up your drive or damage it physically the drive will be sent to a facility for external data recovery where they can typically recover anything below 7 reformattings even if the platters have been exposed to air.
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balistic
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| Posted: Wed Apr 19, 2006 3:08 pm |
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Regarding that whole "seven-pass rewrite" thing, it's pretty much bunk. The DOD, being overly paranoid about the commies, specified that classified data should be wiped seven times, but that doesn't mean they can actually recover data that's only been wiped six times.
In reality, if you do a low-level format (not just a quick format) on a drive once, the data's gone for good. In theory, tiny amounts could be retreived from slack areas between cylinders using custom, exotic equipment, but the process would be beyond tedious, and cost millions of dollars per megabyte, if not tens of millions. And then factor in the odds of finding the one megabyte you're looking for on a typical consumer hard drive with a 100,000 megabyte capacity . . . nobody has been able to demonstrate such a recovery in practice.
The government actually farms the vast majority of its data recovery out to private contractors.
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cheney
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| Posted: Wed Apr 19, 2006 8:07 pm |
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| balistic wrote: |
| In reality, if you do a low-level format (not just a quick format) on a drive once, the data's gone for good. In theory, tiny amounts could be retreived from slack areas between cylinders using custom, exotic equipment, but the process would be beyond tedious, and cost millions of dollars per megabyte, if not tens of millions. And then factor in the odds of finding the one megabyte you're looking for on a typical consumer hard drive with a 100,000 megabyte capacity . . . nobody has been able to demonstrate such a recovery in practice. |
Actually, no. The process is very expensive as in a couple thousand dollars, not millions. The process of data recovery of this sorts is a chemical extraction of the data from the physical platters. There is almost nothing electronic about data recovery in this manner.
| balistic wrote: |
| The government actually farms the vast majority of its data recovery out to private contractors. |
Now this is very true, and these same contrators do offer the same services to the general public. Of course joe Smo down the block is not going to pay more than $5000 to extract a collection of pirated porn, but companies will certainly pay this for essential data recovery.
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balistic
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| Posted: Thu Apr 20, 2006 7:09 am |
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| cheney wrote: |
Actually, no. The process is very expensive as in a couple thousand dollars, not millions. The process of data recovery of this sorts is a chemical extraction of the data from the physical platters. There is almost nothing electronic about data recovery in this manner.
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I . . . what?
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