I tried to change the product version, but each time, the size allocated to the HDD disk becomes too large to download until the end.
During the download process, a “lack of capacity” pops up and i can’t download. How can i download UE4?
My HDD file system is NTFS and available size 198 GB.
What do you mean? What is it these days? 30GB? That’s not a lot at all… You could skip content examples, that should shave off some of the bulk?
You mean the 200GB? You see this during download?
edit: if you go to the Properties of that drive, does it read FAT32 or NTFS?
If UE4 is just 30GB, i can download because it’s not big.
The disk allocated size of the folder where UE4 is downloaded is allocated larger than the actual file size.
So, during the download process, a “lack of capacity” pops up because of disk allocated size and i can’t download it.
plus : my drive reads NTFS
Not sure what could cause this then for an NTFS drive 
ok T…T thanks you
Bytes Per Cluster size might be big. I had same issue. you can check by opening Command Prompt as Administrator and type:
cmd
fsutil fsinfo ntfsinfo C: (which your unreal engine is loaded)
200 GO is NOT ENOUGH. I’m not kind to suggest high level setup but you need at least 1 TO and an SSD would be better. Unreal alone may take more than 60GO (It completely depend the version) just with a couple of free Stuff on the marketplace. You can reach the 200Go within a Week. So you will need more.
^This^… As soon as you install / first run, DDC / Paging file can equal or be larger than the whole engine! More install tips / advice here: