New
#11
Hi,
Did you also refer to this
UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with
I'm in a very similar situation:
I have:
-HP - Compaq 15 laptop
-Windows 10 Home x64 (that I want to keep, and have it dualboot with Win7)
-Intel Celeron N2840
-Unknown Motherboard
-F.31 BIOS, whatever that means
-8GB RAM
-Hard drive & partitions:
1TB GTP-partitioned HGST HTS541010A9E680
Partitions:
-650mb healthy unlabeled recovery partition (100% free)
-260mb healthy unlabeled efi system partition (100% free)
-835GB "Windows (C:)" healthy boot page_file crash_dump primary NTFS (83% free, Windows 10, want to keep)
-74GB "Windows 7 (W:)" healthy primary NTFS (100%, reserved by me for Windows 7)
-855mb healthy unlabeled recovery partition (100% free)
-21.25GB "Recovery (D:)" healthy oem partition (11% free, Windows 8 HP backup probably, want to keep)
-a Windows All-in-one ISO
-GPT-partitioned hard drive
-Disabled Secure Boot
-Disabled Legacy Mode in BIOS
-Set USB 3.0 in BIOS to Auto
I flashed the Win7 ISO onto my pendrive using the Windows 7 Download tool.
I disabled Secure Boot in order to load into it.
It was missing from the boot list, so I enabled Legacy Support to boot into it.
Booted into the ISO from USB
I got an error when at the custom installation\partition management screen about not being able to load the CD/DVD drivers or something, and a tutorial online led me to setting USB 3.0 to Auto, from Enabled.
I want to install the x64 version of Windows 7, alongside Windows 10.
The ISO booted up just fine, and I went through the Windows 7 installation process, but I could not install Windows onto my Windows partition (keep in mind I selected x64 Windows 7 Ultimate, some people say x32 Windows won't throw this error but I want x64) and when clicking on the details about why I cannot install onto that partition, I was told that the installation cannot proceed as this is a GPT-partitioned drive.
Keep in mind I want to preserve Windows 10 and all my files, therefore I won't clean the disk and repartition it.
Online I found sources which claim that in order to install x64 Win7 onto GPT I must run it in UEFI mode. I have acquired my Windows 10 boot file thing (whatever the name was, ended in fw.efi) from C:\Windows\Boot\Efi (I think) and I renamed it to bootx64.efi.
In Rufus, I selected the old windows 7 ISO (without /efi/boot/bootx64.efi) and when I chose "GPT on a UEFI system" or something along these lines, I was told that this is not possible as the ISO is not UEFI-bootable. Therefore, I extracted the ISO contents, inserted the bootx64.efi into /efi/boot/ (the boot folder I had to create) and then I created an ISO out of these files in MagicISO.
Rufus then allowed me to flash this ISO as GPT in UEFI system, and I quickformatted it, selected FAT32 and allowed it to have an extended label.
I attempted to boot into this ISO.
Without Legacy mode, I received an error (0x00000f?) stating that some file (something like system32\boot\...) could not be loaded. In Legacy mode, there were two options for the USB, so I chose the second one (as opposed to the first one which was UEFI USB) (both had the same name) which resulted in a screen with a semi-blurred font saying that no bootable media was found, press any key to continue.
I have previously managed to install Ubuntu 14 through this usb pendrive/flashdrive, with its own swap partition and ext3 partition without any problem. To delete Ubuntu I entered recovery, did 'bootrec /fixmbr' and deleted the Ubuntu partitions.
Some website also stated that I could loss-lessly convert my partition table from GPT to MBR, using MiniTool partition wizard, and when attempting to do so, I received the error that the system partition is on the drive I want to repartition and such action would render it unbootable.
Maybe if you try doing one of the things I did it will work out for you