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Accidentally deleted partition but data is still there

By Jskid ยท 27 replies
Jan 2, 2017
  1. I had to reinstall Windows. There was a hard drive with storage on it, that should have been left alone, but during the reinstall process the partition was accidentally deleted. So the partition was deleted but the disk was not formatted. Now when I try to access it it says that it's inaccessible. EaseUS data recovery tool can see the contents, but the thing is it's the biggest disk the computer has so I'd prefer to repair it than salvage the data and copy it to another drive since it's the biggest.
  2. cliffordcooley

    cliffordcooley TS Guardian Fighter Posts: 11,580   +5,139

    Try this

    Unfortunately it looks as if this program does the same as the one you have.
    So it looks as if copying to another volume is a security measure to safe guard the data being recovered.
  3. Jskid

    Jskid TS Guru Topic Starter Posts: 340

    Crap. I don't see why rebuilding the partition table necessarily deletes all the data? Why is this such a difficult task?
  4. cliffordcooley

    cliffordcooley TS Guardian Fighter Posts: 11,580   +5,139

    I've had the very same question. In fact I needed to use Recuva the other day that does the very same thing.
  5. billmcct

    billmcct TS Rookie

  6. Puiu

    Puiu TS Evangelist Posts: 3,571   +2,053

    Have you tried using a live CD like Hiren Boot? It might not be the easiest way, but it does offer multiple tools to help you recover partitions.
    cliffordcooley likes this.
  7. wiyosaya

    wiyosaya TS Evangelist Posts: 4,193   +2,476

    I have not had this experience directly and have not done this to resolve this kind of problem, however, I do know that if you know the original partition parameters, you may be able to use disk manager to create a new partition with the same parameters as the old one, however, do not format the partition. Then, your data may be "just there". I recall that I once did what I suggested, and that the partition and the data were still there. YMMV
  8. Bigtruckseries

    Bigtruckseries TS Evangelist Posts: 583   +322

    You should NEVER attempt to upgrade from one OS to the next without backing up your most important, unrecoverable data.
    For that, I keep around an old 1TB Western Digital portable HDD as well as a 256GB flash drive.

    when I upgraded from my 2TB HDD to a Samsung 4TB SSD, I used Aomie backupper pro (free online). took about 3 hours.

    Data recovery is expensive.

    Try the free software "Partition Find & Mount"
  9. wiyosaya

    wiyosaya TS Evangelist Posts: 4,193   +2,476

    Backup before update/upgrade is a must. Though it is not freeware, I use Image for Linux - works great on all OSs http://www.terabyteunlimited.com/index.htm
  10. mailpup

    mailpup TS Special Forces Posts: 7,422   +635

    You should be backing up your data on a regular basis regardless if you are going to upgrade or not.
  11. Trillionsin

    Trillionsin TS Evangelist Posts: 1,834   +436

    I use Active @ Boot disk for all this stuff, has served me well and has been very straight forward and easy to understand.

    Edit: Again not free, and I know several people have recommended other things, but if you try this out you'll appreciate it, and all the additional tools it comes with. You may not need them all, but for someone like me who does IT support and repairs on a daily basis, this is invaluable.
  12. VitalyT

    VitalyT Russ-Puss Posts: 4,596   +3,202

    I think there is some confusion going on here...

    Restoring a deactivated partition and recovering deleted data are two different things. The former simply reactivates the partition, while the latter can vary from simple to complex solutions, depending on percentage of data loss, type and condition of the data carrier.
    wiyosaya likes this.
  13. wiyosaya

    wiyosaya TS Evangelist Posts: 4,193   +2,476

    Hey TS, investigating this topic and the solutions offered would make for an interesting article, IMO.
    cliffordcooley likes this.
  14. Trillionsin

    Trillionsin TS Evangelist Posts: 1,834   +436

    Is it though? The partition table is just deleted data, basically. ;)

    The first I heard someone mention "deactivated partitions" is from yourself.) As far as I scanned through the few posts, and used ctrl+f to find key words relating to that. In which case, you would be mostly correct. Usually just assigning a drive letter. An "active" partition basically is the one the PC boots from (bootable partition). If the partition does not appear in My PC, then it usually just needs a drive letter assigned to it.

    Other than those, you may want to explain what you mean by "deactivated partition", if those example are still incorrect.

    Several edits: Still may have typos to edit out
    Last edited: Jan 4, 2017
  15. lripplinger

    lripplinger TS Addict Posts: 284   +99

    This is what I use to recover customer files from situations such as sudden partition loss, etc.: http://runtime.org/
    I use their GetDataBack utility. It is inexpensive and well worth it.
  16. wiak

    wiak TS Enthusiast Posts: 52   +8

  17. RickFN

    RickFN TS Rookie

    TestDisk might be able to do what you need. I have had success with it after a failed cloning screwed up the system partition on the source disk. I was able to use TestDisk to restore that partition and the data was all intact. I was able to pop the source drive back in with no issues.
  18. Julio Franco

    Julio Franco TechSpot Editor Posts: 8,284   +1,280

    Great responses from the community, thanks guys and best of luck @Jskid! Do let us know what worked for you ;)
  19. trgz

    trgz TS Addict Posts: 264   +69

    I did this once myself and I seem to recall that I used a utility on the Ulitimate Boot CD to get my partition back - not sure if it was on the v3.0 or v4.0 disc or what the utility was, but it worked like a dream.
    One thought, if easeus can see it, might it simply be that you need to assign a drive letter to the partition? it looks like you might've tried this but it's worth mentioning
  20. fktech

    fktech TS Maniac Posts: 532   +141

    All terrific suggestions!

    Acronis backup all HDs/partitions before any new changes so restore takes 15 minutes when something does go wrong AND it has never failed me.
  21. fktech

    fktech TS Maniac Posts: 532   +141

    Exception is Surface Pro funky partitions and recovery process which sucks. Poor experience will keep me from ever buying another Surface Pro or Surface Book.
  22. Gars

    Gars TS Booster Posts: 243

    Several times I have been in a trouble with broken partitions (windows don't see it and need to format it), including flash drives
    DiskDigger worked perfect every time to recover files and folders.
  23. Bigtruckseries

    Bigtruckseries TS Evangelist Posts: 583   +322

    I've never had this problem but I will try it or recommend it to see if it works.
  24. JamesandBennie

    JamesandBennie TS Booster Posts: 170   +14

    You can see the content , but you can not recover it ? do you user free version or Pro Version ? Could you send me Screenshot ? thanks
  25. cliffordcooley

    cliffordcooley TS Guardian Fighter Posts: 11,580   +5,139

    That's not what he said. He said he could see the files and he could recover them to a different drive. But the drive is large and larger than anything else he has.
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