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I have unknowing selected delete previous operating system while installing ubuntu 16.04.Even though I stopped the installation process after knowing that I clicked install now. Now I cannot see my windows partition and also hard disk type changed from NTFS to Linux. I need to recover important data from the hard disk. Please help.

marked as duplicate by Sumeet Deshmukh, karel, user364819, L. D. James, David Foerster Jun 22 '17 at 10:35

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  • seems impossible but try out TestDisk anyway, if you can get the old partition listed, you might have a chance – Sumeet Deshmukh Jun 22 '17 at 7:47
  • Restore important data from backup ? – Soren A Jun 22 '17 at 7:48
  • @SorenA Not from backup from drive i had three drive in windows partition but now i can see only 468gb linux hard disk sda1. – krishna Jun 22 '17 at 7:55
  • @krishna yes I understand that .. you have chosen to use whole disk for Ubuntu. But you don't have "important data" without having a backup, do you ? – Soren A Jun 22 '17 at 7:58
  • Data without back-up is by definition unimportant. ;-P – David Foerster Jun 22 '17 at 10:35