There's now support for both UEFI and GPT boots. If you need more control, though, you're able to configure how the USB drive will be formatted (file system, cluster size and so on). Getting started could be as simple as browsing to your ISO image and clicking the "Start" button: the program will then walk you through everything else it needs to know. It'll automatically detect your USB drive, for instance, so you may not have to select that. Rufus doesn't require any installation, and is generally very straightforward to set up. USB keys are also easier to carry around, less likely to be damaged, and faster, which may be important if you need to use the disc often. This won't help you much if your target system doesn't have an optical drive, though. Of course if you have an ISO image then you could simply burn this to a CD or DVD. Ubuntu, Kubuntu, and probably Edubuntu will ship with the PAE kernel in 12.Rufus is a simple utility which makes it easy to build bootable USB drives from ISO images. PAE is provided by Intel Pentium Pro and above CPUs, including all later Pentium-series processors (except most 400 MHz-bus versions of the Pentium M) One user's experience liked 32G SandiskĪlso how old is system? Are you using 64 bit and it needs 32 bit or even so old that PAE does not work? More tests Flash drives post #5 - C.S.Cameronīrand of flash does seem to make a difference. Post #14 some flash drives that did not work Usually unetbootin is the preferred choice. Others do check MBR to see if it has boot code.Īlso some installers work with some systems and not others. Some BIOS just check for boot flag, which should be on partition on USB flash drive after you installed. ![]() ![]() Why isn't this bootable live USB drive booting? so what is causing this "Missing Operating System"? I'm convinced the iso image is valid and the files created by unetbootin look correct as well. Please remember that unfortunately I'm using XP so linux type of line command solutions aren't available to me. Again when I try that I get "Missing Operating System" I've run the executable on the USB drive and selected to run the demo and it says I need to reboot off of the USB.I'm using XP so I don't know how to check if LBA is on though. I've reformatted the USB (although it was FAT32 I reformatted it to FAT32 again just in case).I've verified that the syslinux.cfg and ldlinux.sys files were indeed created on the USB. ![]() When using Mint 15 I've also verified the ISO image I've downloaded with the md5sum application (the MD5 code matched).I've tried using Ubuntu 13.04 and Mint 15 (again either from the distribution method or downloading the ISO image myself, 32bit versions).In unetbootin I've tried using the distribution method and have tried using the ISO image I have downloaded.I've downloaded and used unetbootin to create the bootable live USB drive.Here is what I have done and what I have tried. I'm POSITIVE I'm booting off of the USB in the bios. Every time I plug in the USB and in my bios have my laptop boot off of it I'm getting "Missing Operating System". I am running Windows XP and am trying to make a bootable live USB drive. I'm having a problem that is driving me insane.
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