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#1
IDE vs AHCI setting in BIOS
Greetings!
My PC (a HP Pavilion Elite d5100t ATX) is a dual boot box, with windows 7 on HDD, and Devuan linux on SSD, I've been running linux exclusively for several years until found out I couldn't boot win7 anymore. so I tried to reinstall win7, however windows bootable disk refused to install on the HDD partition. then I remembered that I did something in bios before when I had issue with booting linux. After changed bios setting for SATA controller to 'IDE' from 'AHCI', i was able to reinstall and boot into windows 7. but now linux on SSD won't boot.
It seems I can only boot one OS at a time, either windows 7 with 'IDE' enabled, or Devuan/linux with 'AHCI' enabled in bois setting.
my question is what is difference between IDE and AHCI booting? is HDD designed for 'IDE' and SSD for 'AHCI' and mutually exclusive?