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New SSD can't set to AHCI

Hey guys if anyone could help me with this SSD problem I'd really appreciate it!

I just recently got a new Samsung SSD 850 EVO (500GB) and what I did was cloned my old SSD (112GB) onto it. I removed the old SSD (112GB) and tested out my new one and everything seems to work and run fine except that when I check 'My Computer' my local disk is still showing the old SSD "2.19GB free of 111GB." The new SSD (500GB) is not shown there.

I tried to run the software Samsung Magician that came with it and it is showing me errors that says "AHCI is disabled for one or more connected SSDs. System must boot in AHCI for best performance."

After reading more into that, I realize I need to set my BIOS to run in AHCI for the new SSD which I did, but then would get a BSOD. When I set it back to IDE it works fine, but then I'm back with the problem as to why it is showing my old SSD instead of the new one.

I believe my new SSD that I put in is not being recognized as the new partition to perform at its best. The Samsung Magician software also says "Your OS is currently optimized for use with an HDD."

I wanted to mention that I have a 300GB HDD that is also in use, but I didn't make any changes with it. I am currently using Windows 7 Home Premium also if that helps solve my problem in any way. Any advice or feedback would be great, thank you!
3 answers Last reply Best Answer
More about ssd set ahci
  1. Best answer
    Hey there, Richard!

    I'd recommend you to make sure that you have the AHCI/SATA controller drivers updated from your motherboard manufacturer's website. If it's still not working, then you could try resolving the issue by editing the registry in Windows. Keep in mind that this procedure is pretty delicate, so make sure you backup the Registry before tempering with it.
    Here are a couple of links that can shed some light on the procedure:
    http://www.tomshardware.co.uk/answers/id-1634729/boot-switching-driver-ahci-windows.html
    https://support.microsoft.com/en-us/kb/922976

    Good luck! Hope it helps you! :)
    SuperSoph_WD
  2. SuperSoph_WD said:
    Hey there, Richard!

    I'd recommend you to make sure that you have the AHCI/SATA controller drivers updated from your motherboard manufacturer's website. If it's still not working, then you could try resolving the issue by editing the registry in Windows. Keep in mind that this procedure is pretty delicate, so make sure you backup the Registry before tempering with it.
    Here are a couple of links that can shed some light on the procedure:
    http://www.tomshardware.co.uk/answers/id-1634729/boot-switching-driver-ahci-windows.html
    https://support.microsoft.com/en-us/kb/922976

    Good luck! Hope it helps you! :)
    SuperSoph_WD


    SuperSoph! I followed some of those procedures and it now has allowed me to change to AHCI which is great thank you! My computer is running normal, but it is still not showing my new SSD when I click "My Computer." I still see the old SSD on there for some reason. I don't get why my new SSD is not showing up on there with the unallocated free space. Do you have any further suggestions to fix this please? I feel like I am closer now that AHCI works, but it is strange that it is still showing my old SSD.
  3. I think I figured it out! All I had to do was authenticate the new SSD on the Samsung Magician software and it got rid of the old SSD. Thank you for your help!
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