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makaron7102020-10-10 11:19:32
Windows
makaron710, 2020-10-10 11:19:32

How to roll out a backup from an mbr disk to a laptop with uefi?

Hello!
We need expert advice on an issue in which he himself is an amateur.

Bought a laptop with uefi installed.
There is a computer with win 10 on mbr disk.
I set the task to make a backup from the computer and roll it out on the laptop.
I found out that uefi does not load mbr disks. When choosing a download, it does not see them at all.
I made a bootable gtp flash drive with Win PE. Converted ssd on laptop to mbr using the method https://www.bootdev.ru/2019/11/Booting-Installed-M... .
Rolled out mbr-backup on ssd.
But Windows is loaded only with a bootable gtp flash drive connected ...

Is it possible to complete the task in a less crutch way? To run without any bootable flash drives.
Or is the only correct option in this case to install Windows from scratch on a gtp disk?

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2 answer(s)
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makaron710, 2020-10-11
@makaron710

As decided.
- On a new machine, there is no Legacy mode in the boot menu (bios / uefi).
- Immediately disabled secure boot (disable).
- Made a bootable flash drive. I got working options with the Rufus and USBboot installer ++ programs. If someone does not know how to do this, google "How to create a bootable UEFI GPT flash drive". In my opinion, the best builds for bootable flash drives are AdmiPE and Sergei Strelec .
- I made a backup of the system disk, which I was going to roll out on a new machine.
- On the new machine, the disk must have a GTP structure.
- Rolled out the backup of disk C.
- Make an EFI bootloader for a GPT disk. If you google it, you can do it on the command line. Specifically, in this case, I created an EFI partition (500MB per eye), and was partially guided by the video . In it, this is done from the AdminPE assembly.

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Viktor, 2020-10-10
@nehrung

Bought a laptop with uefi installed.
There is a computer with win 10 on mbr disk.
I set the task to make a backup from the computer and roll it out on the laptop.
An attempt to open a backup not on the computer on which it was made most often ends with a BSOD. It succeeds only if the architectures of the hardware of these computers coincide fairly completely. For a laptop and a desktop computer, such a coincidence is very unlikely. Keep this in mind.
Is it possible to accomplish the task in a less crutch way? To run without any bootable flash drives.
I succeeded several times. But only under certain conditions - the target computer must have the option to disable UEFI. As I recently learned, on many modern computers, the option to disable UEFI is completely absent, and the number of such computers is constantly growing. On them your task, I believe, is not solved.
I did this - put the OS on a disk marked in GPT, then converted GPT-> MBR (modern partition managers can do this without losing information), and then restored the MBR bootloader using a utility like BootICE or another similar one (there are many of them). Disabling UEFI must be done immediately after the conversion of the disk layout, before starting on the MBR.

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