WARNING: Although dd is a very reliable utility when used properly, incorrect use can result in an overwritten hard disk and severe data loss. Ensure that you rename dd.exe to dd-removable.exe as indicated in the following steps. Furthermore, be certain to remove all other USB storage devices (USB memory sticks, USB hard drives, and so on) to prevent accidentally writing to the wrong device. The dd utility is a third-party utility provided by chrysocome.net and is not in any way affiliated with or produced by McAfee Enterprise. Use of dd is strictly at your own risk and covered under the GNU General Public License. McAfee Enterprise will not be responsible for any problems or data loss that might arise due to proper or improper use of the dd utility. Be aware that all pre-existing data on your USB stick will be permanently removed after imaging with dd.
NOTE: Writing an image file with dd will cause your USB memory stick to be limited to the exact size of the .USB image file itself. For example, suppose you have a USB stick that is 1 GB and you write an image file to it with dd that is 217 MB in size. After writing, the USB image will be detected by Windows as containing only 217 MB of storage space. If you want to use your USB stick for another purpose, for example as a general storage drive requiring its full capacity, you will need to completely reformat your USB stick. Windows operating systems do not have this ability natively. You will need a special tool, such as Hewlett Packard's USB Disk Storage Format Tool. This tool is publicly available, and can be found by searching for "HP USB format tool" in your preferred Internet search engine. Restoring the space on your USB drive is not supported by Technical Support.
Use the following steps to write the .USB image file to your USB stick using the dd utility:
- Download a USB image file of the MWG version you want at: https://contentsecurity.mcafee.com. This site requires you to log on. If you do not have logon information, contact customer service and have your valid Grant Number ready.
- Download the dd utility from a third-party site, such as the program provider at: http://www.chrysocome.net/dd. Select the link for dd-0.5.zip.
- Extract the dd.exe file from the .zip file and rename it dd-removable.exe. This enables a write-protect mode so that the executable will write only to removable devices. This helps protect you from accidentally overwriting your hard disk if you make a mistake.
- Remove all USB storage devices (external USB hard drives, USB sticks, and so on) from the Windows machine you are using, and then plug in the USB device that you want to image.
- Select Start, Run, type cmd or cmd.exe, and press ENTER to open a command prompt.
- Run the dd-removable --list command in the directory where you placed dd-removable.exe. You can change directories using the cd command (for example, cd "c:\<foldername1>\<foldername2>\<foldername3>).
- If all USB devices are removed except the device you want to reimage, you will see output similar to the following:
\\?\Device\Harddisk1\Partition0
link to \\?\Device\Harddisk1\DR21
Removable media other than floppy. Block size = 512
- Run dd-removable using the following command:
dd-removable if=<filename of .USB image> of=\\?\Device\Harddisk1\Partition0 bs=512k --progress
For example:
dd-removable if=wwappl-6.8.6-6257-5.1.7.usb of=\\?\Device\Harddisk1\Partition0 bs=512k --progress
NOTE: If your device line listed by the dd-removable --list command is different, use that output instead.
TIP: The commands are easiest if you place dd-removable.exe and your USB image file in the root of one of your hard disk partitions, such as C:\ or D:\, so you will not have to type an extended file path.
After completion, you can boot from the USB stick and re-image the appliance.
NOTE: You might have to enter your system's BIOS on reboot to change the boot order so the machine will attempt to boot first from USB devices. After booting from the USB stick, you should see the same installation prompts you would see if imaging from a .ISO burned to a CD.
