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This is my primary SSD which has Ubuntu 19.10 installed.

SSD_Ubuntu

This is my secondary HDD which has 500 GB allocated to Kali(/dev/sda2) and two ext4 partitions /dev/sda4 and /dev/sda5

HDD

I'd like to install Windows 10 on that /dev/sda5 partition. Here are the steps that I took and the problems I faced.

  1. I formatted the partition to ntfs, plugged in my Windows 10 Live USB, restarted the machine, started the installer, selected the partition in the menu, formatted it. Windows split that partition into four partitions: with three reserved for the system(about 550 MB in total) and 1178 GB as Primary. I selected that and hit next. Got an error message saying Windows couldn't create a partition ....
  2. I delete all the four to get an unallocated partition, it splits it up again into four parts as before, I hit next and now I get an error in the next screen while installing Windows detected that the EFI system partition was formatted as NTFS. Format it as fat32 and try to install again.
  3. I restart my machine, go back to Ubuntu, reformat that ntfs drive to fat32 and start the installer process again and I get the above two error messages again.

I've never installed Windows after Ubuntu, always installed it before any Linux distribution in a dual boot scenario. Any help/suggestions would be highly appreciated.

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  • Could you not shut off the other (Solid State Drive(s)), and the other hard disk(s) then install Windows from a fresh clean hard disk (sda5)?
    – vssher
    Commented Jan 15, 2020 at 13:12
  • @vssher I have 1 ssd and 1 hdd. sda5 is in a partition in the hdd where I'd like to install windows 10. Can you please elaborate on what do you mean by shutting off the drives?
    – S Chakraborty
    Commented Jan 15, 2020 at 13:20
  • In BIOS is there not an area where you can shut off the Linux SSD? Maybe there are too many partitions on the HDD (?), I have always installed Windows first myself, it is just guess work to me also, I am not sitting in front of the machine, sorry.
    – vssher
    Commented Jan 15, 2020 at 13:25
  • If sda4 and sda5 are blank, could you not combine them and then shrink Windows partition to recreate sda5 later? And could you not remove the linux swap disk also, for now?
    – vssher
    Commented Jan 15, 2020 at 13:30
  • Try deleting even that EFI partition
    – Madhubala
    Commented Jan 16, 2020 at 2:12

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