BD-RE slighlty smaller than BD-R?

[huynh hoang]

I had a BD job that was like 250 MB less than the maximum 25 GB size.  I tried burning it to BD-RE but ImgBurn asked if I wanted to Overburn it.  It burned to BD-R fine.  So, I'm guessing that a BD-RE's maximum available space is slightly smaller than a BD-R?  What is the maximum size then for a BD-RE?

Thanks

[LIGHTNING UK!]

Assuming the BD-RE is formatted without spare areas (normally these would enable the drive's 'defect management' feature), they should both have 12219392 sectors available for writing to.

[dbminter]

Yeah, my experience has been they're both the same size, and I think they were designed to be that way.  I never formatted with spare areas, so I never noticed a difference between BD-R and BD-RE.