Sometimes, when you try to move/copy new files (larger in size) onto USB flash drive, the error message appears like “ there is not enough space on removable disk. you need an additional space ”. And, if you look at the USB, you will see empty space. Even though there is plenty of free space available on the USB drive you will be not allowed to save new data onto it.              1. Plug in your USB flash drive. For safety, take a backup of all files on it (e.g. copy them to your computer) before proceeding to the next step. 2. OPTIONAL – this step enables write caching on the USB flash drive which optimizes it for quicker performance and is more suited to NTFS. You don’t have to do this step – if you aren’t too bothered about speed of data transfers skip to step 3: W7 or earlier – press Start then right click ‘Computer’ an...