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  #41  
Old 21.06.2011, 12:02
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Re: Disaster with computer - Has everything gone forever?

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ah geek fights, much better then bitch fights lol
This thread must seem gobbledygook to anyone not in IT...

It would be impossible to debate in any other language other than Geek though...
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  #42  
Old 21.06.2011, 12:22
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Re: Disaster with computer - Has everything gone forever?

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Has anyone here *actually* recovered an erased partition which has had a new partition and file system slapped on top of it by the recovery process ? The files have been overwritten, the NTFS metadata has been overwritten and so has the partition table. I guess not judging by the answers. Undeleting is one thing, salvaging from an overwrite involves highly sensitive recovery hardware that can read the platters at various write history levels. It is very expensive and time consuming.



Please do not confuse the OP , or get the OP's hopes up.

You CAN NOT undelete files from an NTFS partition once the NTFS meta data areas have been reset/recreated by a partition and format which a recovery process does and once the rescue partition has been restored. These recovery processes invariably use imaging techniques which overlay /overwrite all the critical system areas, and nearly always involves re-partitioning and re-formatting. Undeleting relies on NTFS metadata still being here which may hold starting cluster and EOF records, as well as possible previous file names. The old entries will exist and allow recovery unless overwritten /reused by new file meta operations such as files being created, renamed or moved etc. Re-formatting completely destroys the NTFS meta data and any chance of logical recovery. Re-partitioning complicates matters even worse.

Imagine writing very hard on a notepad , tear the top page off and you can still see the faint impression of what you wrote underneath. Recovery hardware can do this 13 levels deep on the disk platters with each level holding different data. This is what is required to salvage (not undelete !) the data. Ultra secure permanent erase programs rewrite disk blocks 25 times to ensure that they cannot be read. Re-formatting and partitioning is akin to throwing the notepad away to software programs which have absolutely zero control over the read resistance on the drive heads which is required to control which write layer is read by very special read write heads that simply do not exist in normal hard disks.
Using the data tool I mentioned, I had been able to partially recovered data from a HD that was partitioned. As long as the HD is from Window system and NOT Mac or Linux. 100% recovery is hoping for too much!
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  #43  
Old 21.06.2011, 12:23
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Re: Disaster with computer - Has everything gone forever?

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How long do these restores take?

I have never used HP restore. The restore processes I have used were not dependent on drive size. It would take 7 hours to properly erase a 2TB drive, at a typical 60mb/sec. If it took less than a few hours, the data is likely still there.

I would be surprised, though, if the OP could recover it without the help of Kroll and friends.
I'd expect a 1000 to 2000 CHF bill (and budgeting for 3000, just to be on the safe side).

The HD was probably fried before the restore and would have needed professional recovery, anyway.

Reminds me of the postings people with such problems made to usenet's alt.sysadmin.recovery newsgroup....
;-)
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  #44  
Old 21.06.2011, 12:24
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Re: Disaster with computer - Has everything gone forever?

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that's all very well, but as a novice home user the op doesn't stand a chance, we also have no idea what the pc's own recovery utility did, did it just copy windows back, did it totally re-partition, format and then copy, did the op re-partition sometime in the past etc etc

the bottom line here is, Op, unless you are willing to pay a professional company to do the data recovery for you then the chances of you getting anything back are slim, and every time you turn the pc on the chances get slimmer.
For the sake of 30.. it is worth getting that disc and have a go!! I don't know where the OP is but I am happy to give it a go if I get my hands on the HD! (btw, I am still in UK, somewhere in the SE, so there is a chance that I can give it a go)
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  #45  
Old 21.06.2011, 13:16
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Re: Disaster with computer - Has everything gone forever?

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Using the data tool I mentioned, I had been able to partially recovered data from a HD that was partitioned. As long as the HD is from Window system and NOT Mac or Linux. 100% recovery is hoping for too much!
...and was re-partitioned hard drive re-formatted with a new NTFS , which was in turn re-imaged with a backup image ? I think not.
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  #46  
Old 21.06.2011, 13:58
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Re: Disaster with computer - Has everything gone forever?

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This thread must seem gobbledygook to anyone not in IT...

It would be impossible to debate in any other language other than Geek though...
I'm not in IT, I do REAL engineering!

Tom
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  #47  
Old 21.06.2011, 15:11
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Re: Disaster with computer - Has everything gone forever?

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...and was re-partitioned hard drive re-formatted with a new NTFS , which was in turn re-imaged with a backup image ? I think not.
I had it once.. and I recovered some files.. not the whole 1TB..
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  #48  
Old 21.06.2011, 16:16
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Re: Disaster with computer - Has everything gone forever?

Update - well, I ran the unerase thing and it appears to have bought back some files. Unfortunately, you have to go through these files to see what is useful and what is not.... but, I have a new problem - if I do not use the computer for around 10 mins then the monitor shuts down and I cannot find anyway to get it back other then switching off the computer which I don't wish to do because of the overwrite situation.
Big guns are coming later in the week to hopefully sort it out.

Meanwhile I have hidden Mr S's electric drill - ( he was moving his hifi around the room for the 100th time) and as he is feeling so guilty he has completed all the jobs that I have been waiting for him to do for ages

Thanks for all your help - Have to say most of it I don't understand but I am sure it will help someone who is computer literate.

Will keep you posted on the outcome.....
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  #49  
Old 21.06.2011, 16:32
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Re: Disaster with computer - Has everything gone forever?

You shouldn't be turning the computer on at all because of the overwrite situation. Unerase should have only been run on an image of the HDD. At least you have confirmed that the files are there still, and that the HP recover only performed a sparse re-image.

So much for the HP website claiming all files are lost.
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  #50  
Old 21.06.2011, 16:45
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Re: Disaster with computer - Has everything gone forever?

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So much for the HP website claiming all files are lost.
They are lost to the non-geek
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  #51  
Old 21.06.2011, 18:59
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Re: Disaster with computer - Has everything gone forever?

Are you sure the undelete hasn't recovered useless temp files or files created after the restore. Do you recognise the names or content ?
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  #52  
Old 21.06.2011, 21:30
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Re: Disaster with computer - Has everything gone forever?

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Are you sure the undelete hasn't recovered useless temp files or files created after the restore. Do you recognise the names or content ?

UTH - I do recognise some of the files - they are dated right back to the birth of the computer.
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  #53  
Old 21.06.2011, 22:03
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Re: Disaster with computer - Has everything gone forever?

Good luck SmackerJack and thanks for the updates. I hope you do eventually get your data back.

I'm not a techie and my head starting spinning after the reading the first couple of geek-speak exchanges between UTH and P42.
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