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I have a Dell Optiplex 745 Intel Core2Quad Q6600 Legacy BIOS - No UEFI 8 GB of DDR2

I have Ubuntu 18.10 Installed, it boots, but I want to update, but it’s telling me it can’t.

So I decided to start fresh, but whenever I try to boot from the USB, it’s like it’s booting from CD and it doesn’t work, goes to FreeDOS instead for some reason. I am using RUFUS, maybe I’m doing something wrong, but I can’t seem to figure it out. I am following the instructions, but I must be missing part of the puzzle here.

Christopher Bartleson
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    Did you verify the ISO you are using to make the USB device? I suggest you do and remake and or re download the ISO and remake the USB. You also have not said what version of Ubuntu you are trying to install, a good bit of info that should be in the question. – David Sep 11 '22 at 05:06
  • Ubuntu 18.10 release-upgraded to 19.04 or the next release (Ubuntu releases upgrade to the next release, except for LTS releases have a choice of upgrade to next release or next non-LTS) so your release-upgrade is gone. You can re-install (you didn't say if desktop/server, but desktop without touching files & having manually installed packages re-installed automatically IF available for new release in Ubuntu repositories), and FYI: I used 8 various dell optiplex 755 & 745 boxes in QA for all releases. – guiverc Sep 11 '22 at 05:29
  • I attempted to install Ubuntu Desktop 20.04 LTS and 18.04 LTS. I used RUFUS and balnaetcher, which I think might have been the problem. I changed to Universal USB Installer and while attempting to make a bootable Manjaro USB and that ended up working, I’ll be trying the same thing later with Ubuntu. – Christopher Bartleson Sep 11 '22 at 16:43
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    Does this answer your question? Why Doesn't a Bootable USB Boot – karel Sep 18 '22 at 10:03

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