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Windows 7 Dual boot attempt show red bar

So i was trying to dual boot windows 10 with windows 7 and when it expanded 100% and it restarted, when it boot into windows setup it shows a red bar. I read some discussions and the solution said : enable the int 10h thing . How Do I enable it?

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Re: Windows 7 Dual boot attempt show red bar

Also CSM is not in the bios

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Re: Windows 7 Dual boot attempt show red bar

Unless this system is 6th generation (skylake) or older -- meaning it's from 2016 or older -- there's no support for Windows 7 on it, so you're not going to find Windows 7 compatible with the system.  And on systems not much newer than that, UEFI is the only option - CSM/Legacy support began disappearing with systems released in late 2016 or later.

 

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