bootableUSB

Using dd

According to the user base this seems to work on Windows too via Cygwin.

1. Unmount partition(s)

sudo umount /dev/sd<?><?>  

where <?><?> is in the format <char><int> (ex. /dev/sda2), look it up. Then, next:

2. Write to block device

sudo dd bs=4M if=input.iso of=/dev/sd<?> && sync

where input.iso is the input file, and /dev/sd<?> (!, format: <char>; ex. /dev/sdb) is the block device you're writing to.

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Be aware of the difference between partitioins and devices.

See:

• Differences between volume, partition and drive
• Persistent block device naming

Manual formatting

Allows to use dd to write on a partition and similar use-cases. Follow this guide: https://wiki.archlinux.org/title/USB_flash_installation_medium#Using_manual_formatting

UNetbootin command line options for local .iso files

There is also a Windows and Mac version available. GUI alone does not work under Ubuntu (at the time of writing this guide):

unetbootin installtype=USB targetdrive=/dev/sdb2 method=diskimage isofile="/path/to/iso/file.iso"

Partition have to be mounted somewhere. F.ex.: sudo mount /dev/sdc2 ~/mount/.

Rufus

Similar to UNetbootin. Windows-only.