Partition a usb drive so it can be used as a bootable usb and also as storage?

[kaidemarco]

So I have a 128gb flash drive, I want to partition it so half of it can be used for storage, and the other half I can use to boot into mintos. Is this possible?

 

[CountMike]

It may or may not work depending on oS on it but it doesn't even need to be partitioned, just make a folder for all the other files you want to keep on it.

 

[RolandJS]

Make your usb bootable first, then simply create a DATA folder and keep your data in that folder. I recommend having two of them, just in case one develops a "logical" error (thus forcing a format), the other one probably will work just fine.