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My laptop is a Dell inspiron with Windows 8.

HDD is 1 TB, with 3 OEM partitions, + the C:. I split it into C: and D:. Fine.

After a reinstall of Windows 8, using Dell recovery tool, I can't see the D: anymore, except in Windows's administration Tools, where I can see it but now as an OEM partition. I can't do any action on it, no delete, no format, nothing...

What can I do to get my 550 GB partition back?

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You would need to use a Linux partition tool. You need to merge the system partition disk into a single partition, recovery the system, then after Windows 8 is installed partition the system disk into 2 partitions. I suggest just skipping the recovery tool and finding yourself a Windows 8 image disk. –  Ramhound Apr 24 '13 at 20:13
    
Thanks. Do you know any linux partition tool that can do the job? –  Francois B. Apr 24 '13 at 20:36
    
You had that backed to a separate location right? –  Zoredache Apr 24 '13 at 20:58
    
All important data are backed up. I dont' care losing the partition, I just want to free the space and get it back. –  Francois B. Apr 24 '13 at 21:13
    
@FrancoisB. - There are numerous tools a good old Google search is helpful in a case like this. –  Ramhound Apr 24 '13 at 23:00
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1 Answer 1

up vote 1 down vote accepted

I found this solution: http://jaredheinrichs.com/how-to-delete-oem-partition.html

  • cmd
  • diskpart
  • list disk
  • select disk 0
  • list partition
  • select partition 6
  • delete partition override

Data are lost but after that you can format the unallocated space from disk management tool.

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