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I am running on Ubuntu (I was on W8 before), but I need to go back to Windows. I'm trying to boot from a live-DVD and a FlashDrive, but without luck. Ubuntu doesn't give me any boot option. If I press Esc at the startup screen, i only get this options:

*Ubuntu Advances Options EFI/ubuntu/MokManager.efi efi/EFI/ubuntu/MokManager.efi System setup

I have an Acer Aspire v5-571. Thanks a lot!

user416516
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1 Answers1

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Ubuntu cannot boot your install media. It's up to your UEFI or BIOS to do so - You will need to get into a boot menu or the UEFI/BIOS itself to boot from USB/DVD. Hardware vendors implemented different ways to get into UEFI/BIOS (most of the time different keystrokes). So, you will need to browse Acer's support pages (or use Google) to find out how to get into your UEFI/BIOS' boot menu.

embik
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  • thanks! I tried entering the EFI/ubuntu/MokManager.efi but it doesn't give any options. it only says: error: file"efi/EFI/ubuntu/MokManager.efi" not found. Any idea? – user416516 Jun 03 '15 at 14:05
  • As said, you're looking into the wrong direction. Whatever `EFI/ubuntu/MokManager.efi` is, it's a file - But you need to enter your **hardware's** UEFI. It's in **no way** related to Ubuntu. I'm pretty sure you are not pressing ESC at the "start up screen" but rather at a point in the boot process when it's too late. Look up how to enter UEFI/BIOS on Acer devices. – embik Jun 03 '15 at 17:52