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If I already have a bootable USB disk with Red Hat Enterprise Linux (RHEL) in it, is it possible to add a package to it?

For example, trying to add ntfs-3g package to be able to mount a partition formatted with the NTFS filesystem from the rescue shell in RHEL.

I booted a broken Windows machine with my USB disk (RHEL) and chose the option to rescue, and when I get to the shell, I am unable to mount the partition /dev/sda4 in my case, because it says it doesn't know the NTFS filesystem

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    It's probably easier to just create a new repo on it and add it at install time. – Ignacio Vazquez-Abrams May 16 '18 at 17:26
  • Thank you Ignacio, I am not quite following what you recommended. I am not trying to install anything, could you elaborate a bit more? – Rafael Ruales May 16 '18 at 18:30
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    How did you create this "bootable USB disk"? – Ignacio Vazquez-Abrams May 16 '18 at 18:34
  • I used a tool called "Etcher Bootable USB Creator" – Rafael Ruales May 16 '18 at 18:52
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    If you're not afraid of reinstalling, passing expert to the installer will let you install to a USB drive, giving you a predictable install. – Ignacio Vazquez-Abrams May 16 '18 at 19:04
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This is possible you will have to install the livecd-tools package from the EPEL repository, then create a custom kickstart file adding your updated package to the %package list then running.

livecd-creator -c kickstart.ks

The write the created iso to the USB.

Red Hat knowledge base article 44483 is suggesting the above tool. You may have also a look into the man page for livecd-creator utiltity.

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