Does Acronis 10 backup wizard allow you to click finish if there is not enough space on destination drive?

I have Acronis 10 and I use the CD boot option mostly - I just started a very vital image backup of the entire C drive on my computer which is has over 100 GB used But I forgot to check if the destination drive had enough free space to handle the Image created!

So my question is does acronis check to ensure there is enough disk space on the destination drive during the backup setup wizard session?

OR will it just stop and give me a disk full error a few hours down the road after the destination drive runs out of space?

thanks