can't find secure boot option in bios

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mantvyyys

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Aug 21, 2017
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Hello, I have a Toshiba Satellite A665 laptop and I can't find the option for secure boot...
I checked everything and tried to set a supervisor password.
I need to turn secure boot off, because I want to install other os.
It has windows 8.1
Sorry for my bad English.

Thanks in advance.
 



Usb, CD all the same. It says Bootable media not found or something like that.


 


Now it has windows 8.
It had windows 7, but i somehow managed to install windows 8 by running the disk while in windows 7.

I tried changing the sequence, but it only can boot to ssd.
Tried kali, mint linux, windows, mac os x.
I made windows with media creation tool.
And mac os x with transmac
for linux i just loaded the files onto the cd/dvd (all os'es worked on my main pc with disabled secure boot)
 
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