a friend got himself a SanDisk SSD Plus for his nearly seven year old notebook. Unfortunately, he can't install Windows on it, because, as the Windows Setup told us, the Notebook is unable to boot from the SSD.
And that's pretty much it. His Samsung R519 back from 2010 can't boot from a SanDisk SSD Plus built in 2016 and I just have no clue, why. I am unable to select the SSD as boot device in BIOS. The SanDisk SSD works fine in my (2011) Dell XPS 15 and his notebook has no problems booting from my Samsung 840 SSD.
For all I ever thought, all our hard drives and controllers use and support AHCI since long before 2010 and also up to the present day. And yeah, the SSD is recognized, it's just not bootable. What piece am I missing? Why won't this combination work?
Maybe this is easy, I just don't know what to search for exactly.
Oh, for the record: All tested disks were checked to use DOS partitioning, no GPT around.