[QUOTE=mciahel;2603949]Hi and Welcome!You’ll get a BSOD on that installation then.
On second thought – if I change the SATA settings from AUTO to AHCI for the SATA HDDs only, the settings for the IDE Master HDD of installation Number One will not be changed. So why should I get a BSOD when I boot up the older, first installation? Is there a work-around to boot up from two HDDs, one IDE, one SATA? Thank you for your time and attention.