1. The HDD is FAT32 or exFAT. Files could be too large to fit or too many files in a folder.
2. Carry on from 1, filenames may not work from NTFS to FAT32/exFAT.
3. There could be permission issues. Windows often gives you this error rather than telling you what the real problem was.
-> IN CLOSING, NEVER EVER TRANSFER. COPY!!!!
I've seen folk move/transfer and lose every file on the transfer. Do not move! Copy.
Or sync. I will give a nod to Roadkil's Unstoppable Copier since I find it gives better error messages than Windows.
Am trying to transfer 20GB of data from my pc to portable device but says not enough space when there is more than 600GB available...please seek advise..