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If I dual boot Ubuntu alongside windows 10 with a bootable usb drive will it install Ubuntu on the usb drive or on my internal hard drive?

After installation of Ubuntu, do I need to plug in my bootable usb drive to run Ubuntu again?

I have two usb drives with the Ubuntu iso setup on them with Rufus. However, after testing each, only one of them shows up in my Bios boot options. Why is this?

After following this tutorial: https://www.youtube.com/watch?v=MSVV_EoApdo I setup my 8gb Sandisk Usb drive with the Ubuntu iso on it using Rufus. However, after booting to ubuntu from my bios and proceeding with the installation, it tells me that Ubuntu does not have enough space to install. So does this mean Ubuntu was trying to install on my usb drive or on my internal hard drive?

Edit: Here is what I am getting on my screen when I am installing in order. https://i.sstatic.net/6V04s.jpg

Final Edit and Solution: So my ssd as in my bios is configured as RAID for my windows 10 setup. In order for Ubuntu to detect my hard drive I have to switch it to AHCI. So after switching my hard drive to AHCI in my bios and then booting up ubuntu install from the usb, I am finally able to complete the Ubuntu install. However, I still have to switch the hard drive bios setting each time I switch OS which is not the most convenient.

I am using a Dell XPS 9575 Laptop which could be a reason for this.

So far I am enjoying Ubuntu A LOT. Thanks for all the help everyone!

Johnston Liu
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By default, Ubunuto will install on the internal hard drive. You can specify where you want it installed. You can't install Ubunto onto the Live Ubunto USB. It's telling you there is no space because it doesn't see a place to install.

Go into Windows, Start, type diskmgmt.msc in the search box, and reduce the size of the Windows partition, to make room for Ubuntu. Leave the space as unallocated. Reboot with the Ubunto iso. Install it to that unallocated space.

If you want to install Ubunto onto that 8GB Sandisk card (not an iso version, but a version where you can save files and add apps - an iso is an unchangeable image), you need to either have another Sandisk to boot from, or you can run install from the Ubunto you installed to your hard drive.

If Ubuntu is installed on your internal disk, when you boot up it will ask you which OS you want to run.

If you install Ubuntu on the Sandisk instead, you have the option of having Ubunto put Grub (the OS selector) on the internal drive, or not. The first option is straightforward. The easiest way to accomplish the second option is to disable the internal drive in BIOS, or physically take it out, and then run the Ubuntu install ISO (you need an extra booting Sandisk to do this). This latter option leave your internal hard drive alone. It won't put Grub on there.

JasonF4
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