By the way, I read the Popcoren C-200 user guide.
It’s says the following:
The attached USB storage devices must be formatted with Ext2 / Ext3 or FAT16 / FAT32 in order to be compatible with your NMT. This will enable you to upload, change or execute files (NTFS and HFS formatted drives are read-only). Note: FAT16 and FAT32 formats have a file size limitation at 4 GB, which may pose a problem for large media files such as a DVD ISO with minimal compression.
I never heard about Ext2 / Ext3 .
Is it possible to format my drive into these systems?
Is it safe , and what tool can do the work?