Follow these steps to create an.img file from the.iso file you have, and then copy to the USB stick. This will also change the filesystem that is on the USB to make it bootable. • Open the Terminal Application. • Type command to convert the.iso file to.img using the convert option. Hdiutil convert -format UDRW -o /path/to/target.img /path/to/ubuntu.iso • Insert your flash media.

You can create an empty disk image, add data to it, then use it to create disks, CDs, or DVDs. In the Disk Utility app on your Mac, choose File > New Image > Blank Image. Enter a filename for the disk image, add tags if necessary, then choose where to save it. Additional tip: While creating bootable USB by using above method, dd tool will make several partition on that pen drive. So after using bootable USB, It is best to format and use the pen drive for making another bootable ISO.

• Type command to determine the device node assigned to your flash media (e.g. Diskutil list • Type command to unmount the flash (replace N with the disk number from the last command; in the previous example, N would be 2).

Diskutil unmountDisk /dev/diskN • Type DD command (replace /path/to/downloaded.img with the path where the image file is located; for example,./ubuntu.img). Prepend the device path with 'r' for the than without the 'r'.

Sudo dd if=/path/to/downloaded.img of=/dev/rdiskN bs=1m Note: your file might also be called downloaded.img.dmg. • Type command to eject the flash drive. Diskutil eject /dev/diskN • Restart your Mac and press alt/option key while the Mac is restarting to choose the USB stick as the boot disk.

There are several tools available to copy and install IMG and ISO files to memory cards and removable storage, but I was looking for something that could easily backup and restore disk image files for my Raspberry Pi, as well as create bootable Linux installation USB drives from ISO's with OS X as well as Ubuntu. I also wanted a program that could write compressed IMG files directly to the memory card without the need to decompress the image files first. Dd the command line utility has been my default choice for years, but lacked a GUI that fit my requirements and so I decided to write my own - that is how dd Utility came to be. Ideal for flashing IMG files to SD Cards for use with Raspberry Pi, Arduino, BeagleBoard and other ARM boards. Requirements • Ubuntu Linux and Mac OS X supported Instructions - Ubuntu • Download the dd Utility DEB installation file from the or from our. • Double click on the DEB file to open and install with the Ubuntu Software Center, or from the command line on other Debian based distros with: sudo dpkg -i ddutility_1.5_all.deb • Select dd Utility from your Dash or Applications menu to start.

• Instructions - Mac OS X • Download dd Utility DMG installation file from or from our. • Double click on the DMG file to open and drag the dd Utility icon to the Applications folder as shown below.

• Select dd Utility from your Applications folder to start. • Ubuntu User Guide Restore or write IMG and ISO files to memory card or disk • Select dd Utility from your Dash or Applications menu to start. • NOTE: You can also Drag and Drop a image file on the dd Utility app icon to restore. • You will be asked to enter your password to start the process. Administrator rights is needed to write the image file to the memory card. • Select Restore • Select the IMG or ISO file you would like to restore/write to your memory card or disk.

Supported file formats include.img,.iso,.zip,.gz and.xz • Make sure your memory card is inserted in your card reader and select it from the next screen. No need to format the card. How to merge cells in microsoft word for mac free. • Confirm the settings and click Start to begin the process of writing the image file to the memory card.

• NOTE: All data on the memory card will be overwritten and replaced by the image file data. • Once the process has started, it can take minutes to hours depending on the size of the image files, the speed of the memory card and compression used. • Be patient and wait for the process to complete. • Wait until the restore is complete before removing your memory card. • If all went well you should see: Backup Memory Card to IMG file • Start dd Utility from the Dash or your Applications menu. • NOTE: You can also Drag and Drop a Disk Volume on the dd Utility app icon to backup.

• You will be asked to enter your password to start the process. Administrator rights is needed to read the image file from the memory card. • Select Backup • Make sure your memory card is inserted in your card reader and select it from the next screen. No need to format the card. • Next select the Backup folder location. • Enter the filename and folder of your backup.

You do not need to specify a path or extension for the file. • You then have the option to select to compress the backup on the fly. This option will take a bit longer to complete, but the file size will be greatly reduced. • Next confirm the backup settings and click Start. • Once the process has started, it can take minutes to hours depending on the size of the image files, the speed of the memory card and compression used. • Be patient and wait for the process to complete.