Creating a USB key for installing TufinOS on an appliance

In order to install TufinOS on a Tufin appliance, you must boot from a USB key that has the TufinOS image on it.

Prerequisite

  • An empty USB flash drive with at least 32GB of space.
  • A TufinOS image file. The image file can be obtained from the Download Center in the Customer Portal.

To prepare the USB key

  1. Copy the compressed image to a Linux machine.

  2. Verify the integrity of the downloaded compressed file. Run a checksum tool on the .tgz file and make sure that the output matches the checksum in the matching documentation item in the Download Center.

  3. Decompress the downloaded file:

    tar xzvf TufinOS-X.XX-XXXXXX-x86_64-XXXX-Final.usb.img.tgz

    After decompression, you will have two files - the main .img file and a .sha256 checksum file.

  4. Verify the integrity of the TufinOS image using the checksum file:

    sha256sum -c TufinOS-X.XX-XXXXXX-x86_64-XXXX-Final.usb.img.sha256

  5. Connect the USB flash drive to the Linux server.

  6. Run the command:

    dmesg | tail

  7. At the end of the output of this command you will find the USB drive device name. Usually it is /dev/sda, /dev/sdb, or /dev/sdc. Copy that name.

  8. Erase the USB flash drive before burning the TufinOS image to the USB flash drive:

    dd if=/dev/zero of=<usb flash drive device name> bs=512

  9. Burn only the decompressed TufinOS image file to the USB flash drive:

    dd if=TufinOS-X.XX-XXXXXX-x86_64-XXXX-Final.usb.img of=<usb flash drive device name> bs=512

    Where <usb flash drive device name> is the name copied in previous step. This step may take a while; about 60 seconds or less.

  10. Flush the data to the disk to make sure that all data is copied correctly.

    sync ; sync

  11. Remove the USB key from the machine.

After TufinOS is installed, you can copy the TOS installation file to the /opt partition of the appliance and install it.