Thread: Ubuntu no longer boots from CD or USB drives

i installed ubuntu on friend’s new machine few months ago. os boots hard disk , works fine, but machine no longer boot ubuntu desktop cd or usb flash drive.

windows cd boots fine.
dos boots ok usb (i did bios update).
burned iso on machine in case dvd drive fussy.
tried bios set sata instead of ahci
tried opensuse, no boot
tried booting gparted-live cd, no boot
memtest ok

in cases linux kernel loads fine, os fades black, no errors on screen. . .

cd booting worked ok because that’s how installed ubuntu!
usb booting worked ok too, friend booted ubuntu while.

i’m stumped on one, since winxp cd boots ok. ideas?

if you've confirmed these same other cds boot fine in pc, guess @ point lens in cd/dvd drive needs cleaned. can buy cleaners $10 usd or so.

why same drive read ms cds not other cds, have no idea -- if same cds boot ok in pc.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [ubuntu] Ubuntu no longer boots from CD or USB drives

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