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Bootable disk not showing in bios dell

in flag

I have a customized ubuntu server image. I was adviced to create a bootable disk using linux command dd if='x.iso' of='path to usb' bs=4M. I have a dell, os windows 10 originally, i will wipe it off and install ubuntu server. When in bios, the bootable usb does not show up in boot sequence list. When i create bootbale disk of the same image using the tool rufus and using iso not dd. It works, but the OS after installing does not behave how it was customized. I was informed to only use linux command. Is there a way i can get the usb to show up in bios

Julien Chau avatar
ca flag
Somewhere in your bios that you can enter just by starting the computer pressing a key combination most of the tiime indicated on the screen , you must find something like "boot order"
sudodus avatar
jp flag
If the drive boots when created with Rufus but not when cloned with dd, it means that the drive is not a hybrid iso file. You can try to make [a copy of] it a hybrid iso with with `isohybrid` according to [this link](https://help.ubuntu.com/community/mkusb/isohybrid). if it still fail or does not behave well, there is some more serious bug, and I cannot help you with that.
Nicole avatar
in flag
@Julien Chau i specifically mentioned that it does not show up in boot sequence.
Nicole avatar
in flag
@sudodus ill try that
Julien Chau avatar
ca flag
In the bios you will not only find the "boot order" sequence but also something like "enable boot for xxxx".
Nicole avatar
in flag
I have not come across this enable boot for.. ill have to search the bios then
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