Trouble w/BD-R 50GB disc

[keep38]

Hello all!

 

Im trying to burn to a 50GB BD-R disc. My issue is, what I'm trying to burn which when I check the properties says that it's 48.1GB in size burn ImgBurn states that the files are too big to burn? I don't understand why that would be the case when the disc is 50GB. Can someone assist?

 

Thanks

[LIGHTNING UK!]

It's 50,000,000,000 bytes of free space, not 50GiB (53,687,091,200 bytes) - which is what the OS uses when calculating / displaying the size of files.