DL380 G7 Cant find boot disk after OS Install

[DaniloGSA]

Dear community

I recently aquired an old DL380 G7, and saved it from being scraped.
I wanted to install a Server OS to use it as a home server for various things. Sadly ive been struggling with the server for the whole weekend. I've tried installing various server systems, however, it seems that the server itselfe sometimes has issues locating the harddrives (they are old notebook harddisks) during installation of windows server 2016. However ive managed to install Windows 8 but as soon as i reboot, the server seems to forget to boot to that os again, no matter how much i change around at the boot order.  I even managed to install ESXI 6.0.u3 but same issue, as soon as i restart, it doesent have a boot drive anymore. 

Is there a common issue i dont know of? 
Is there a way to completely reset / update the server and flash everything?

Best regards

Danilo

[Jimmy Vance · Accepted solution]

If I recall on Gen7 you need to specify the boot drive in the controller settings

[DaniloGSA]

That was it. Man im a newbie. Thank you Jimmy!