+x jphughan - 27 May 2019 2:36 AMIf you're running Reflect 7.2, you shouldn't need to do any of that manual prep. Just open the Create Rescue Media wizard, select that flash drive (by its device name, no need to worry about any particular drive letter), and click Build. Reflect will sort out the rest, and if it has to format your flash drive to do that properly, you'll be warned about that beforehand. If for some reason that fails and you want to follow those manual prep steps, before that "create par primary" command, you need to run the "clean" command. Make sure you see a confirmation that the clean command actually succeeded. If you see an error, try simply running it again. That command marks the entire volume as unallocated, and if that isn't done, i.e. a partition still exists on the flash drive, then the "create par primary" command will fail because there won't be any unallocated space for the new partition you're trying to create -- which is likely why you're seeing the message you are. Each command in that sequence relies on the previous command having completed successfully. If one of them fails, the next one very likely will too. As an alternative, if you've already got a partition created on the flash drive, i.e. a volume with a drive letter appears in This PC when you connect it, then you can skip those steps in diskpart and instead just format that volume by right-clicking it in Windows and clicking Format. Select FAT32 as the file system and also check the Quick Format option. Then go to Reflect to use the Create Rescue Media wizard.Lastly, just as an fyi for next time, you posted this in the Reflect V6 section of the forum even though you're apparently on V7.