Accidentally deleted Windows 8.

[safaoral]

Hi. I was trying to make dual boot with win8 and ubuntu I accidentaly accepted replace win8 with ubuntu and I closed the pc. When I turn on windows doesnt come. I'm writing this with ubuntu installed on a usb stick.

[Tadaen_Sylvermane]

Reinstall windows from scratch. Only thing to do.

[oldfred]

Did you make an image backup of Windows before install or create the recovery set of DVDs before install, so you can restore system?

Your porduct key is now in UEFI and only applies to the OEM/vendor version your installed.
Product key now in UEFI/BIOS
http://reviews.cnet.com/8301-33642_7...-product-keys/
http://answers.microsoft.com/en-us/w...2-b3f191b9370c

You may be able to go to vendor and some offer the recovery set of DVD's for a nominal charge.

You may be able to use testdisk to restore the NTFS partitions. But if any Windows file is overwriting which is most likely it will not be bootable, but then you may be able to do a repair reinstall.
Partitions you should see. Testdisk may not separately see the system reserved, and you need to restore that also.

Microsoft suggested partitions including reserved partition for gpt & UEFI:
http://technet.microsoft.com/en-us/l...8WS.10%29.aspx
Order on drive is important: msftres
http://en.wikipedia.org/wiki/Microso...rved_Partition
Windows technical info on gpt and GUIDs
http://msdn.microsoft.com/library/wi...sktop/aa365449


https://help.ubuntu.com/community/DataRecovery
http://www.cgsecurity.org/wiki/TestDisk


Windows 8 has both a Refresh and a Reset option. To find out the details of both, and to decide which best to use, you should check in with the Windows 8 forum:
http://www.eightforums.com.
http://windows.microsoft.com/en-us/w...-refresh-media