Hi
Env : Pc Asrock Mother board ,floppy disk drive ,TSST SHS223C dvd rom
Prb : Bios does not support boot from this (damned) DVD rom
and does not support boot from usb
to bypass i have to open pc and connet another dvd drive
seraching internet i find this program
plob 5.0.15 ...
i create an floppy image and i boot from floppy succesfully
but when i select usb device it hungs (tried also alt-u)
it seems ehci driver loaded with plop does not function
looking in the plop site,many users had the same problems
Is there an OPEN SOURCE program doing the same function ?
thanks in advance for the support
Maurizio

You haven't actually stated your purpose or end goal or what you have to work with. If you happened to have a Linux OS with Grub/Grub2 installed on this computer, you could boot the USB from an entry in the Grub menu on the internal drive, if you have Grub??

Hi
Forgive ..English is not my mother tongue
bios does not support booting from usb
i need to boot from usb...
the pc dual boot winxp & debian 9.9
boot manager is grub

so insert your usb drive, boot your debian and update your grub (to identify the OS on the usb drive)
Next time you will be able to select that from grub menu.

Hi
Thanks for the answers
i have not experience with GRUB ..in the past (some years ago...) i was using LILO and it uses the lilo.conf
(very easy to understand ,if i remember well it points to vmlinuz)
i installed grub GUI
the target is to load gparted-live to perform backups
gparted-live uses itself a grub loader...
i will check files on the usb pen,and study how to make a new entry to grub then i will provide feedback

there is a tool update_grub2, probably that will work for you

boot Debian, insert usb and mount(not sure if this is necessary) open a terminal, as root run update-grub

Hi ...im using debian 9.9
this distro uses "grub customizer" as GUI front end to grub
i look at gparted-live usb created it stores vmlinuz and initrd.ims on the /live directory
i look also grub.cfg on usb to copy kernel parameters
with "grub customizer" i select "new" to generate a new entry
fill name field with "gparted-live"
type field with "linux"
parttion field show me a menu that find usb pen ,so i select /dev/sdc1
initial ram disk field ,i set "/live/initrd.img"
linux image fied ,i set "/live/vmlinuz"
kernel param field i copy the first entry of gparted-live grub.cfg and check it
"boot=live union=overlay username=user config components quiet noswap ip= net.ifnames=0 nosplash"
all input field show at the right the green icon (valid entry)
but the boot sequence field still stay greyed out with a warning
"Error building boot sequence check parameters "
any help will be appreciated
Maurizio

Hi i updated the thread,in the mean time colorpurple21859 post a reply...

Hi
i have both update-grub and update-grub2
what i have to run ?
i have not grub or grub2 installed but common libraries "2.02-beta3-5+deb9"

this is Debian update-grub,

Hi
i plug usb key ..linux see it as /dev/sdc1
i try update-grub both with /dev/sdc1 not mounted and mounted
it does not detect /dev/sdc1

Hi
IMHO update-grub does not detect /dev/sdc1 because the gparted-live does not store vmlinuz in the /boot directory but instead uses the /live directory
about grub customizer i find this bug reported to developpers ....same as my problem

Are you running update-grub from a gparted-live or from debian 9.9 installed on the hard drive?

Hi
i run update-grub from Debian installed on hard disk ...
i can't boot Gparted-live because i have it on usb stick ...i can't boot from usb with this computer ,please read my first post ...the bios pc does not support boot form usb...