I will try to keep this concise.

I have Ubuntu 16.04 and Windows 10 duel booting on both my laptop and my desktop. I have a bootable USB drive with the Ubuntu ISO on it and used that both times for my two previous installs.

On my desktop when I clicked "Install alongside Windows boot manager" the screen came up that allows me to partition the hard drive. There was a drop down menu that let me choose whether I wanted to install on the 120GB SSD or on the 1TB HDD, and a slider to choose the amount of memory to partition. I chose my HDD and everything works just fine.

I just tried to do the same for my brother on his desktop and for some reason it is not seeing his 1TB HDD. We have exactly the same computer. I have spent a ton of time so far trying to figure this out and I do not understand why It let me install on my HDD but not his. Any help will be greatly appreciated.

P.S. If you need more information please let me know.

  • Is Windows 10 fast start up off? askubuntu.com/questions/843153/…
    – oldfred
    Commented Feb 1, 2018 at 4:39
  • Yes I turned off fast boot, it did not change anything @oldfred Commented Feb 1, 2018 at 6:09
  • Fast Boot is an UEFI setting, which is also best off. But fast start up is a Windows setting. What brand/model system? Is UEFI up to date from vendor?
    – oldfred
    Commented Feb 1, 2018 at 13:02


You must log in to answer this question.

Browse other questions tagged .