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I have on my computer windows 7, and I bought external disk. Can I install ubuntu on my external hdd, and keep windows on computer without formatting either the ssd disk on computer nor the external disk. on both I have files I need. Can I just install Ubuntu on the external HD without formatting?

Elder Geek
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Boot to Windows, defrag the external disk. Boot to Ubuntu and run gparted to resize the external drive to make the partition smaller, the run the install program. Inside the install program, be sure to put Ubuntu on the external, and put the bootloader on the internal drive if you want to, or on the external if you want to be able to move the external to to other computers. Just know that if you put the boot loader on the external drive, you are going to have to either change the boot order in BIOS to boot USB first, or select USB every time you want to boot Ubuntu.

Scott Goodgame
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