Open USB block device using gdisk /dev/sdc, configure it as GPT and create Microsoft basic data partition (code 0700), then write changes and quit (Next steps will destroy partition table in your USB drive!!!).
sudo gdisk /dev/sdc
> This option deletes all partitions and creates a new protective MBR.
> Proceed? (Y/N): y
> Partition number ... > hit Enter
> First sector ... : > hit Enter
> Last sector ... : > hit Enter
> Current type is 'Linux filesystem'
> Hex code or GUID (L to show codes, Enter = 8300): 0700
> Should print something like:
> Disk /dev/sdc: 15646720 sectors, 7.5 GiB
> Model: DataTraveler 160
> Sector size (logical/physical): 512/512 bytes
> Disk identifier (GUID): ...
> Partition table holds up to 128 entries
> Main partition table begins at sector 2 and ends at sector 33
> First usable sector is 34, last usable sector is 15646686
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 2014 sectors (1007.0 KiB)
> Number Start (sector) End (sector) Size Code Name
> 1 2048 15646686 7.5 GiB 0700 Microsoft basic data
> Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING PARTITIONS!!
> Do you want to proceed? (Y/N): y
Format new partition as NTFS:
sudo mkfs.ntfs /dev/sdc1
Mount new USB partition to temporary directory in your home:
sudo mount /dev/sdc1 ~/tmp-win10-usb-drive
Download Windows installation ISO, create new temporary directory in your home and mount it there:
sudo mount Win10_1809Oct_English_x64.iso ~/tmp-win10-iso-mnt
Copy all files from mounted ISO to USB drive (you can use rsync to see progress):
sudo cp -rT ~/tmp-win10-iso-mnt/ ~/tmp-win10-usb-drive/`
Unmount Windows ISO and USB drive and remove temporary directories:
sudo umount ~/tmp-win10-iso-mnt/ ~/tmp-win10-usb-drive/
rmdir ~/tmp-win10-iso-mnt/ ~/tmp-win10-usb-drive/
Insert USB drive to new computer and boot from it.