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I just created a Ubuntu Desktop Bootable USB which I intend to use in an infected computer.

Should I make it readonly?

If yes, could you point me to documentation that guides me through the process?

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    An normal Ubuntu Installer LiveUSB .iso image is already Read-Only (do NOT enable persistence). However an installed Ubuntu system on USB cannot be made read-only - it will promptly crash. It's not clear from your description which you are asking about.
    – user535733
    Feb 3, 2020 at 4:01
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    It may be already read only depending on how you created the bootable USB. Try moving a file from the USB and see if it works. If it is not read only, please update your question and describe how you created the bootable USB.
    – user68186
    Feb 3, 2020 at 4:05
  • The previous comments apply to Ubuntu 18.04.x LTS. But if you have Ubuntu 19.10 (or a newer version), you should consider making a really read-only drive according to this link.
    – sudodus
    Feb 3, 2020 at 9:13

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