Install Wi Dows 7 On Asus Tf201 Transform
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I need to install Windows 7 on my ASUS T100TA which has a 32-bit EFI without Legacy Boot option. Windows 8.1 is very lagging, so why don't try install Windows 7?
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First, I prepared 32-bit Windows 7 install USB, entered into BIOS, disabled Secure Boot, but the USb didn't boot.
I also tried other way: Created Windows PE 5.1 bootable USB with extracted Windows 7 ISO which successfully booted. I then opened Command Prompt and ran Windows 7 setup, accepted license, selected 'Custom install', deleted ALL partitions from 32GB Flash drive, created new partition, but it can't install Windows 7 there (missing Intel SD Host Controller driver).
Can anybody help me unlock the Legacy Boot option or give me the BIOS-emulation bootloader?
phuclv3 Answers
Windows 7 needs BIOS INT10 to boot, in turn requiring CSM.
So, your only choice if you don't want Windows 8/10 is Linux. No need to even disable Secure Boot thanks to the linux foundation preloader most distro ships with.
There are alsoreportedhacks to make 64 bit OS load.
You can't.
I have a ASUS M81C which is the same situation as yours, after months research, try and fails, I gave up.
The reason why it's impossible is, Windows 7 only have partial UEFI support on 64 bit version(need CSM), and have no UEFI support on 32 bit. Also, it's nearly impossible to modify the BIOS to add CSM or even legacy mode, you cannot unlock it because it non-exist on your system. And about chain loading, AFAIK, it's not possible on Windows.
If you think about Linux, yes you can have a 64 bit Linux OS on it, but it needs a lot of tweaking and it's buggy.
So we have to live with windows 8 or windows 10, and 32 bit only.
Journeyman Geek
♦How I can install Windows 7
First of all, it depends on how you want to install it.
Classic/Legacy mode:
- You need an option in the UEFI firmware do disable the dreaded secure boot.
- You would need a EFI firmware which emulates int 10, else the installation crashes (sometimes available as 'windows 7 mode'.)
- You need a USB pendrive with a valid bootsector (or a DVD).
EFI mode
You need windows 7 64 bit (not 32 bits, then again, nobody used a 32 bit OS anymore).
You need a windows 7 DVD, or a pendrive formatted in FAT32 (not NTFS!), and with avalid /boot/bootx64.EFI file (which you would need to move manually).
And you still need an EFI firmware with a 'windows 7 mode' to emulate or capture int10.
Installing Windows 7 On Asus Laptop
Obviously you will also need relevant drivers. Drivers are usually ignore since windows 7 was great with build-in drivers. But for a modern laptop, especially those with USB3 ports, you will need additional drivers for things like USB, thunderbolt etc etc.
Journeyman Geek♦