install ubuntu from usb keeps failing

[bhomass]

I am trying to install ubuntu 18.04 onto a motherboard via an usb stick

On the extract media from cp:///media/filesystem step it kept on failing with the message

file "/usr/lib/python3/dist-packages/curtin/utils.py, line131, in _subp cmd=args)
...tin.util.ProcessExecutionError: Unexpected error while running command.
command: ['sh', '-c', 'mkdir -p "$2" && cd "$2" && rsync -aXHAS --one-file-sstem "$1/" .', '--',
...t code :23
reason : -
stdout: ''
stderror: ''

any one knows how to interpret this?

[oldfred]

I would verify that download was correct or that write to flash drive was correct.
https://help.ubuntu.com/community/HowToMD5SUM

Some have to use different flash drive, different port, or different tool to create flash drive.

What brand/model motherboard? Many need UEFI setting changes and will need boot parameters.

If only UEFI, not BIOS/CSM/Legacy boot.
UEFI only bootable flash drive
http://ubuntuforums.org/showthread.php?t=2299040

[bhomass]

was a bad boot usb stick. working now. Thank you.