I am installing windows7 over ubuntu and i created bootable Windows USB, when i click install windows it says:
"Windows Setup Cannot find a location to store temporary installation files. To install Windows, make sure that a partition on your boot disk has at least 686 megabytes (MB) of free space."
I knew it was because my hard drive is formatted as an ext4 and i must delete the partition and create a new ntfs one. But when i tried to do this, it says i have to unmount /dev/sda1
manually. Then i also tried to unmount it through sudo command in terminal like sudo umount /dev/sda1
and also sudo umount -f dev/sda1
but it didn't work, the response was
device is busy. in some cases useful info about processes that use the device is found by lsof(08) or fuser(1)
So i have to make live USB and use gparted, But everytime i download the ubuntu.iso file with size 982mb, it'll say downloading complete even if it has only downloaded 200mb file. why this happened? the internet connection is stable and i tried it thrice. same thing "downloading complete" but it will never completed to its 982mb size.
What else should i do? Please help me fix this problem, i want to get rid from ubuntu and install windows. Please, Thank You.