Data Transfers · External drive and disk space
What does “There isn't room to put the finished file together” mean?
Short answer: Every piece arrived, but the destination lacks room for the whole finished file plus a safety margin. The pieces are safe — free some space and resume, or move the download to a disk with room.
All the pieces of a large download have arrived, but the place it's saving to doesn't have enough free space for the finished file plus a safety margin. Putting the file together needs room for the whole file at once.
The pieces are safe. Free up space on that disk and resume, or use Move to another drive to finish on a disk with more room.
Related: “Needs space” · Move a download to another drive