SanDisk SSD Not Working as a Boot Device

RedMugs

Commendable
Apr 8, 2017
15
1
1,515
Hello, I am trying to install Windows on my SSD and everything is fine. However when I go to my BIOS doesn't recognize it as a UEFI drive. I have made sure my flashdrive and SSD are GPT but when I install Windows it doesn't recognize it as a UEFI drive. I know Windows installed properly, however, because when i boot to my HDD, Windows givrs me the option to dual boot and one of those is my SSD. I have setup the Windows install and can run it fine but it seriously kills boot time to have to go through my HDD. I have AHCI mode on. When I set my Mobo to Win 7 installation mode, it lets me see the SSD in the bios as a legacy option, however when I Boot to it, I get "Reboot and Select proper Boot Device or insert boot media in selected Boot Device and press a key"
Any help is appreciated. I've been on countless YouTube videos and websites for hours trying to figure this out.
 
Solution
Leave AHCI and boot into Windows.
Open Command Prompt as Admin.
Type 'bcdedit /set {current} safeboot minimal'
Restart the computer, enter BIOS and change SATA mode from 'AHCI' to 'Win 7 installation mode'
Press F10 to save changes and exit.
Windows will boot into Safe Mode.
Once more, open Command Prompt as Admin.
Type 'bcdedit /deletevalue {current} safeboot' then reboot.
Windows will automatically without the error.
 

RedMugs

Commendable
Apr 8, 2017
15
1
1,515

Hi, this hasn't seemed to have an effect. However, when it booted into safe mode it would go right to my SSD (although it is still going through my hard drive, just not the Windows dual boot screen
 

RedMugs

Commendable
Apr 8, 2017
15
1
1,515


I have reset the defaults in my BIOS to no avail. I used the same drive and Windows install 2 times before and nothing like this has ever happened. One thing I have noticed is that my SSD seems to be one big partition where as my HDD is 4 different ones, include an 'EFI partition.' Could this be it?
 

USAFRet

Titan
Moderator


You need to completely disconnect the HDD and redo the OS install on the SSD. Delete all existing partitions when you do this.
You're seeing the "dualboot" thing, because your boot info lives on the HDD.

Always install the OS with only the one target drive connected.
 
Solution

RedMugs

Commendable
Apr 8, 2017
15
1
1,515


Oh my God thank you! This was it. Who would of thought the Windows install would be stupid that way? :p