I have been using legacy mode bios for some years now on my Lifebook AH512 LT, since it allows me to run Linux software. However, a few years back, when I was running Windows 8.1, I tried to return the bios settings back to UEFI mode, but found that some parts of the menu that I needed to access were greyed out. As I tried to get round the problem I suddenly found the bios telling me that the main HDD was now locked for security reasons, and no matter what I did, I could not rectify the matter, even though I knew my bios password. My computer seemed 'bricked', not a nice feeling!
In desperation, I rang Fujitsu Service Centre, who were very helpful. They guided me through what appeared to me a few trapdoor (not obvious) access points on the bios menu and within a few minutes my bios was reset to UEFI. Unfortunately, it was all done so quickly and I was so relieved, that I did not have the foresight of mind to write down the procedure followed.
My OS is now Windows 8 and I want to upgrade to Windows 10 to try it out. However, I need to upgrade to Windows 8.1 to do this. I again want to reset my bios to UEFI mode, but I am petrified of locking the HDD again.
I have tried accessing the UEFI settings via Windows 8 Advanced Settings mode and using F9 to set everything to default mode, but this does not work.
From the forum the exact instructions to disable UEFI to legacy mode are:
use the following settings
- Security - Set supervisory password
- Security – Secure Boot Configuration – Secure Boot Option : [Disabled]
- Advanced – Boot Configurations – Fast Boot : [Disabled]
- Advanced – Boot Configurations – CSM : [Enabled]
Is restoring UEFI mode, merely a process of reversing the above steps, as I thought this what I did before!
Any help or advice on the above would be much appreciated.
Thanking you in anticipation.