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I was trying to install Ubuntu 13.04 alongside with my Windows 8.1. But after the completion of installation, I logged in 1 time only. When I was logged in again to Ubuntu, the display was only blinking.

So I tried to install Ubuntu again from CD but the problem remains. Then I tried to install it through Windows but the same. Then I tried to delete Ubuntu partition through Windows, now my Windows as well as Ubuntu is not working. How can I fix this with Ubuntu live booting?

EDIT: Now I can access Windows but Ubuntu is just blinking as before. Can I uninstall Ubuntu?

Zanna
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Suhail
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    Dont worry along with ubuntu u deleted grub.. reinstalling ubuntu just like u did before will solve your problem..both windows and Linux will boot just install Linux again inside free space – minigeek Sep 21 '16 at 05:33
  • Now i can access windows bu the ubuntu is just blinking as bfr.can inuninstall ubuntu ? – Suhail Sep 21 '16 at 06:46
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    13.04? why? Please install a supported release – Rinzwind Sep 21 '16 at 07:53

2 Answers2

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To dual boot your machine Ubuntu needs some unallocated disk space.

Open disk management, select any big disk and right click, then select option shrink volume, type 70000MB (that's enough to run smoothly) and hit enter. You will get a black area as unallocated. Now make a bootable pendrive of Ubuntu, shut down your system, boot your pendrive using boot key and select USB. Select Install Ubuntu

You will get an option Install Ubuntu alongside Windows, which you should select. This should install Ubuntu on your system (make sure both operating systems are in UEFI mode (or both in Legacy mode - check the BIOS or UEFI settings if unsure). If this option doesn't appear then choose the Something else option and you will have to manually partition unallocated space (sample images attached here)

Windows disk management

preferred option is install alongside - choose Something Else for manual partitioning

partition set up example

partition type dialog

partitioning dialogs

partitioning

partitioning

Continue installation...reboot after completion.. hope this helps :)

Zanna
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minigeek
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It is not possible to uninstall an operating system, you can only overwrite it or remove its partition. However, your problem is caused by bootloaders. During Ubuntu installation, the Windows bootloader is replaced with GRUB which partly resides on the Linux partition. Therefore it stops working when you remove Ubuntu partition.

So what you need is to restore Windows bootloader. Then you can remove the Ubuntu partition safely. I haven’t done it for Windows 8.1 yet, so I cannot give exact advice. Moreover, the procedure may vary depending whether you use legacy BIOS or UEFI and MBR or GPT.

First of all, prepare the Windows recovery/install media. Then follow a guide like this one: http://www.fixedbyvonnie.com/2013/12/how-to-repair-the-efi-bootloader-in-windows-8/

Or try a newer Ubuntu version to see if your graphics problem is fixed.

Melebius
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