Is it possible to use a usb rather than a Hard drive

[Onixom]

So at the moment I have everything apart from ram and a hard drive and I only have enough cash for 1 till next month.
Would it be possible to buy ram first and use a usb flash drive to get the computer set up and then buy the hard drive later. Would this work ?
And what would the minimum size flash drive would be needed if it does work

 

[Dark Lord of Tech]

Nope you need to wait for HDD.

 

[USAFRet]

So at the moment I have everything apart from ram and a hard drive and I only have enough cash for 1 till next month.
Would it be possible to buy ram first and use a usb flash drive to get the computer set up and then buy the hard drive later. Would this work ?
And what would the minimum size flash drive would be needed if it does work

No, that will not work.