Hi there, Thankss for your help getting my 10.9.5 to work on my D630 nvidia. I ejected the hdd and inserted another on lying around to have a fresh start and install Yosemite Used the thread here on the forum (the post by hervé in the research - and electrozen's remark), I made the stick, booted it, installed Yosemite. I had 2 runs of the install: - one did all the installing, but had 'one more second waiting' at the end of the installer. The USB-stick-light kept on blinking (I/O activity on the usb-drive). I powerd the system off and tried rebooting. Clover did not find the installed Yosemite on HDD. - Because that was not a success, I redid install (formatted the disk again), and ran the installed (but had to leave to go working). When I came back home the system was powered off, and when I tried to reboot, Clover did not find the installed Yosemite on HDD. So cant boot my fresh Yosemite. -HDD is formatted GUID -Clover is installed with the "Install boot0af in MBR" and "CloverEFI 64-bits SATA" options Where did I go wrong ?