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To create the partition table run:
   sudo umount /dev/sdX*     (umounts unmounts device)
   sudo sfdisk /dev/sdX < PathToTextFile

(To read the partition table from a storage device :
   - sudo sfdisk -d /dev/sdX > PathToTextFile)

Data of each partition

Before writing data to the partitions, umount unmount the device
      sudo umount /dev/sdX*
and plage the SD card  in and out of the card reader.

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The tool should be in the folder:
   \intelFPGA\18.1\embedded\host_tools\altera\diskutils
Copy the   SPL u-boot.bin   and   the Main u-boot.img   to it and run:
   sudo ~/intelFPGA/19.1/embedded/host_tools/altera/diskutils/alt-boot-disk-util -p preloader-mkpimage.bin -b u-boot.img -a write /dev/sdb
   sudo pathToAlt-boot-disk-util -p preloaderImage.bin -b mainU-boot.img -a write /dev/sdX   (the tool finds the a2 partition)

Lastly, unmount the Sd card card ( sudo umount /dev/sdX* ) and test it.

(The tool dd can also be used to write the preloader - sudo dd if=pathToSplUboot of=/dev/sdXp seek=0 bs=64k conv=fsync)

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