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I have Sony Vaio E series laptop 64-bit architecture which was in windows 8 in UEFI mode. I install Ubuntu 13.10 desktop-amd 64 but there was booting problem

I followed one of your tutorial and fix that problem. Mistakenly I uninstall Ubuntu from live usb and when I restart my PC this option appear

Operating system not found.

I did my best but neither I recovered my Win 8 nor Ubuntu. I switched to Legacy mode and install windows 7.

Through wubi i tried to install Ubuntu 12.04 but when I restart my PC and it goes to Ubuntu installation it shows some error like partition boot type.

When I try to install Ubuntu from live usb it shows me that you have no operating system

  1. erase disk and install ubuntu and
  2. Something else.

When I click something else it shows me that all of my hard disk is free.

I create partition in it on of 40 GB mount /, another of 50 GB mount /home, the third one 2 GB for swap area and 10 Mb for /bios/boot something like that.

I install Ubuntu and after installation is complete I restart my PC and then it show me again operating system not found.

How to resolve this????????

share|improve this question
hard to read,plz improve your formatting. –  Avinash Raj Dec 22 '13 at 16:38
You have to be consistent with UEFI boot and gpt partitioning or BIOS boot with MBR partitioning. Windows 7 if in BIOS mode install will not correctly convert drive fully from gpt to MBR(msdos). You would have to remove backup gpt partition table with fixparts. But then a install of Ubuntu in BIOS mode with a bios_grub partition resets drive to gpt and Windows will not boot. But then you have to turn off UEFI or turn on BIOS/Legacy/CSM boot mode. –  oldfred Dec 22 '13 at 16:41
Also, While WUBI supports 12.04 it does not support EFI, so Wubi will fail.... –  TrailRider Dec 22 '13 at 17:27

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