I have 2 Harddrives. One of them contains Windows 7. The other has no Operating System. Now I want to install Ubuntu for a Dual Boot. I am just not sure if I should install it on the same drive as Windows, or on the second one.

Also should Ubuntu be installed in a partition or not? I heard that if you just install it in the same partition that Windows is inside you can easily uninstall Ubuntu whenever you want by deleting it like every other Windows software in the control panel. Or I remove the partition if I make one, not sure what way one is better

  • You do not install in same partition. (back in 2012 there was wubi just for testing, but long discontinued). You can test if your system works using live installer in live mode. Is system UEFI or BIOS? Then is Windows 7 installed in UEFI or BIOS boot mode. Post this from Ubuntu live installer's terminal. Paste above and preserve formatting. sudo parted -l -l is -el, not I (cap i) nor 1(one). Better to copy & paste commands posted as even spaces can be important. Windows only installs in BIOS mode to MBR(msdos) partitioned drives and only to gpt partitioned drive in UEFI boot mode. – oldfred Dec 21 '18 at 21:51
  • Unplug your Windows hard drive and install Ubuntu on the other drive. After replacing the Windows drive, make the Ubuntu drive first HDD in BIOS. Boot Ubuntu and run sudo update-grub. Grub will then give a choice which OS to boot. If you remove Ubuntu, the Windows boot loader will still be working. – C.S.Cameron Dec 22 '18 at 4:17
  • @C.S.Cameron So that means if I do it that way, Ubuntus GRUB might fail at some point or whatever, i remove the drive, or ubuntu, anything, and windows with its boot loader will still be available? – TrackLab Dec 22 '18 at 14:07
  • As long as you put grub on the Ubuntu drive nothing will overwrite your Windows bootloader. This is not much different than booting Ubuntu from a flash drive, as most computers see a flash drive as just another hard drive. – C.S.Cameron Dec 23 '18 at 3:01
  • 2
    Possible duplicate of How do I install Ubuntu alongside a pre-installed Windows with UEFI? – Fabby Dec 24 '18 at 22:06

You have to partition your HDD before installing Ubuntu (from what you're writing you are not experienced, don't take it personally).

  • You can't instal Ubuntu on same partition as Windows but if you will have another partitions and Ubuntu on them you can later on remove them and resize your Windows partition to use whole drive
  • You have to partition your hard drive. Create one partition for Windows (install it and on other part of your HDD install Ubuntu (installer will help you with that).

Solution BTW is here:

How to install Ubuntu 18.04 alongside Windows 10

Good luck! Paweł.

  • Im not experienced, thats correct. What about my question if i can install Ubuntu on the second drive? Or should Ubuntu and Windows be on the same drive? (partotions of course, but same drive) – TrackLab Dec 21 '18 at 20:56
  • Your choice. You can repartition 1st drive / You can add another HDD. But after finishing Ubuntu installation don't forget to install GRUB (program that selects/runs OS) on HDD that is bootable. – felixd Dec 21 '18 at 20:58
  • Oh i didnt knew about GRUB before. That might would have helped earlier when i did something else with the dual boot...so GRUB needs to go on the drive that Ubuntu is installed too? Since, if i install Ubuntu on a different drive than Windows, i either install it on only the one with ubuntu, or on both? – TrackLab Dec 21 '18 at 21:07
  • @Trackster please carefully read up on link above which explains all ... if you discover new sub-questions update your above original posting - Welcome to askubuntu – Scott Stensland Dec 21 '18 at 22:08
  • @trackster GRUB is a program that is loaded before any OS, Windows or Linux starts. It let you choose which system should be booted (run). GRUB must be installed on HDD that is set in BIOS as bootable. Please read linked tutorial ;) Cheers – felixd Dec 21 '18 at 23:38

My choice would be to install on second drive. Sometimes Windows does not play nice with other OSs. Read up first and google on installing Ubuntu on second drive so you have an idea what you are doing.

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