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I've got Ubuntu 10.04 installed on a computer and I am trying to do a fresh install of 12.04. I never had problems booting from a USB stick on it before and USB is setup as the first boot order in BIOS.

According to BIOS the USB stick is recognized at boot on the computer. And the USB stick works on another desktop computer I have tested it on.

Since I already have Ubuntu installed and I can access GRUB command line just after rebooting. Is there anyway I can manually get it to boot the USB stick from the GRUB command line or something similar?

I've tried both Startup Disk Creator and UNetbootin.

uvasal
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1 Answers1

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You can boot the USB from grub prompt if you want. While you are on grub, press C to bring grub command prompt. Then type these commands. (I'm assuming your USB drive is /dev/sdb1).

root=/dev/sdb1
linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper  quiet splash --
initrd /casper/initrd.lz
boot

After typing the boot, hit Enter to boot from the USB. It should load the Live environment and you should install now.

You can also directly boot from the iso image without even extracting the files. Check this question below:

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Anwar
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