Option "Install alongside Windows 10" doesn't appear when installing Ubuntu 14.04

Question

When I try to install Ubuntu 14.04 from a usb drive the option, 'Install alongside Windows 10' doesn't appear. Should I install it anyway, or if not, what can I do so that option appears?

Solution

I had the same issue. The option of "Install alongside windows10" didn't appear while installing Ubuntu 16.04.

The problem was the Ubuntu ISO image on my USB drive was NOT UEFI bootable. I reformatted my USB that will be able to boot a UEFI system.

I used Rufus to create a UEFI bootable USB stick (Note: If you are using fixed disks/hard drives, try Alt - F in Rufus to enable it's detection)

After I did this, it worked perfectly!! I was able to install Ubuntu along-side windows!

Comments

[Terrance]

Did you set up the USB to have a persistent file so it keeps changes?

[Germsoneu]

@Terrance not sure. I just mounted the image using the Pen Drive Universal USB Installer

[Terrance]

I think during the creation of the USB it defaults to persistent file. I would have to check. Anyway, the reason why it is not seeing Windows 10, is there is a file that it uses to detect mounted OSes and is missing the label to see Windows 10. Take a look here. It is best to modify the USB after you boot to it.

[Przemysław Głębocki]

I recommend you to format your USB and prepare it once again using Unetbootin. Also check if your .iso file is complete. Here is an official Ubuntu guide: help.ubuntu.com/community/Installation/FromUSBStick

[oldfred]

Have you turned off Windows fast start up or always on hibernation. Have you used Windows to shrink the NTFS partition to make unallocated space & rebooted immediately so it can run chkdsk? help.ubuntu.com/community/UEFI And this, but 10 should be almost same as 8: askubuntu.com/questions/221835/…

[David Foerster]

Possible duplicate of "Install alongside" option missing. How do I install Ubuntu beside Windows using "Something Else"?