I have been running windows 8.1 and the other day I downloaded windows 10, and created a partition on my hard drive and then installed windows 10 on that partition. everything went fine, except that now I cannot get back into windows 8.1. When windows 10 starts up it gives me now option to go to windows 8.1. I have had duel os's on the same hard drive in the past and I have always had the option to choose which os to load to.
I can see the partition that windows 8.1 is on and all my files are on that partition, so I know that I have not wiped that partition.
Any help would be appreciated, Thanks.