Dell Backup and Recovery USB drive

I recently purchased a XPS 8700 and running Win 7 Pro with service pack 1.  I was going about creating a recovery/back up disk only to find out you can't actually create disk and it has to be done via USB flash drive or in my case, an external HD.  I didn't care to have my external HD partitioned when I thought I was going about creating the recover "disk".  Is there any way to redo that on a USB flash drive now?   Thanks in advance!

See here:

http://dellwindowsreinstallationguide.com/dell-backup-and-recovery-1-8-1-71/

Instructions are for Windows 8.1 but for creating the media are more or less identical for Windows 7.

There are multiple partitions on the hard disk of a laptop including the system partition, System reserved partition, data partitions and for some manufacturers such as Lenovo, they even create a OneKey recovery partition on their products. To backup such many partitions one by one is really troublesome. In this case, you could just make a backup image for the entire hard disk instead of backing up all the partitions on that disk.see more

www.backup-utility.com/disk-backup-software.html