How do i delete an operating system. (Acer Aspire laptop)

kirannp
kirannp Member Posts: 1 New User
edited February 29 in 2018 Archives
Hi, so I recently received my brother's old acer aspire laptop. He had installed an operating system (not windows). The problem is that his old operating system boots before my windows 8 does. It takes me to his operating system, and I can easily get to the page where I pick which system to boot, but whenever I turn off the computer it reboots to his operating system. I would like to know how to delete his off of the computer or at the very least change windows 8 to start up first. I have tried doing the Alt F10 a couple of times to take me to the other page, but it always takes me to his operating system.

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