it means you are transferring data from NTFS to non NTFS. You see, Network Terminal File System keeps properties data for security; and file system management (including the indexing service so you can search your own data). It is safe to do so as i can see whats going on. RAM? for making plots faster more ram is recommended. the picture you posted of 128mb plot would only need a small amount of ram. If you were to make plots on mechanical disks a buffer of 2gb+ (ram) would improve plotting efficiency. Especially where plotting multiple terabytes. Stagger i'm guessing is the memory buffer the ram is for. 2G on the end of the xplotter.exe above i believe means 2 gigabytes of stagger in RAM. and, of course, -n 4096 means 4097 nonces makes a 128 megabyte plot and thus a maximum of a 128 mb stagger in ram maximum is needed and you can change the 2g to 128mb. If you were to say make 1 plot file of 8 terabytes i would recommend a stagger of 4 gigabytes or more to maintain efficient computations both calculating the plot and writing at same time. But all the same, your doing nothing harmful. I will assume your transfer is to a FAT drive either mechanical or flash. File Allocation Table came out with Microsoft DOS and is still used today that it doesn't have the overhead NTFS has.