tl;dr: How do I remove grub from my laptop and revert to the Windows bootloader?
I installed Manjaro on my laptop alongside Windows with an encrypted linux partition and grub bootloader. So I type the partition password after the bios screen and before grub displays.
I’ve since bought a desktop and installed Manjaro on that. I’m about to travel, and need to revert the laptop to use the Windows bootloader. I can then use a utility to merge the recovered disk space into the Windows partition (which is my main objective).
I’ve searched this forum and Googled. I’ve found a few differing approaches but I wanted to get your advice first.
It’s a post for Ubuntu, but the method is applicable to any GNU/Linux distro. You just need to find “Manjaro” instead of “Ubuntu”. Careful not to delete the “Windows”.
After that, restart the system (now Manjaro GRUB isn’t there and you cannot boot to Manjaro, but Manjaro partition is still there), go to the BIOS setup, and make sure the Windows bootloader is at the first boot order.
Boot to Windows, then use Windows native partition disk utility to expand your Windows NTFS drive to override the Manjaro partition.
Ok, I didn’t write it properly. I meant the Windows 10 preinstalled within the sold laptop or desktop by OEMs. OEMs usually provide a software to create their own version of Windows 10 installation live media, but you need to contact the OEM and it’s usually not easy to get it.
The link is suitable for someone who wants to install Windows 10 on their own. Like someone buys an empty desktop machine and wants to install Windows 10 on their own. You’ll pay for a Windows OS twice if you do this step when you already have a machine with OEM pre-installed Windows. OEM Windows license is different from normal user Windows license.
Overall, you’re right that the Windows ISO is available to public. Unless you know something I don’t know .
License is different but ISO images are the same. If you have Windows preinstalled, you can safely reinstall Windows from those images (without paying anything). You have to use the right ISO version, of course: Home, Pro, Education, …
If Windows 10 have been already been installed on the machine, no license key is needed. On one hand OEM machines have Windows key stored in the computer’s ACPI tables. On the other hand Microsoft takes a fingerprint of the system at the first activation (and stores it in it’s servers), so after reinstalling, Microsoft will recognize the fingerprint and will activate Windows without a key.
You can reinstall Windows at any time - using a downloaded image from Microsoft.
As part of a part time job I have often reconfigured new laptops from various OEM vendors.
Most of them is bought cheap from warehouses and comes preloaded with Windows S and to make it a normal Windows one has to activate it using a Microsoft account as they call it.
I don’t want to go through that process so I usually download an ISO - write it to USB and reboot the system - thus doing a complete reinstall - finally I boot - use hotkey to switch into sysprep mode and run a decrappifier script which removes everything - including the store.
Then exit sysprep and reboot - bang - a completely pristine Windows without all the usual crap.
Then it is loaded with a new user account and installed with SQL and a single company app.