A Swap File? What is it anyhow?

To put it simply....it's like having enough air to breathe....

the hard drive (whatever kind you are using- be it USB stick or regular internal or external drive) has to have "room" to breathe when you write or delete files to it....
thus the swap file.....that's why you can't delete any files that are bigger than the remaining gigs on the drive...it just "collapses" from not having enough "air" so to speak....
and when your drives get too full the memory runs low...hence again the swap file is keeping "room to breathe"
for the remainder of the files on the disk....

that's why the operating system needs so much "room" to run on your disk....and why it "run's low on virtual memory"....if it gets to that point you are on the verge of a crash and it will just shut down....kinda like a major heart attack....

sos there you have it.....some tech stuff for those of you interested.....