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How to creat a MBR/Legacy boot stick with Acronis ISO image?

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I noticed that a Acronis boot stick is not booting on my 3 OS system (win7, Linux, Win10) PC.

I can call the BIOS boot menue (F12) and see the stick, but after choosing ist, the system bypasses Acronis and starts the Grub2 Linux OS Boot menu (like it is without the Acronis USB Stick).

How can I creat a Acronis boot stick for MBR/Legacy Systems?

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Klaus, all Acronis Rescue Media is capable of booting in both Legacy and UEFI boot modes, so the issue here may be with the USB media itself or the method used to create it.

See KB 63226: Acronis True Image 2020: how to create bootable media and KB 59877: Acronis True Image: how to distinguish between UEFI and Legacy BIOS boot modes of Acronis Bootable Media

Note: if you have downloaded the Rescue Media .ISO file from your Acronis Account, then there can be issues when converting this file to USB with some utilities.  It is better to create the USB media directly from the Acronis Rescue Media Builder tool on your Windows 10 OS using the 'Simple' method (as per KB 63226).

Thanks Steve,

yes, I downloaded the Acronis ISO from my Acronis account and installed it first with Rufus than with Unetbootin. Non of them worked. I see the Stick in the Moot Menü, but it does not start. Rufus showed only the UEFI target, but all of my SSDs and HDDs in the PC are BIOS/Legacy.

I try to avoid unecessary software on my PC, so I did not want to install Acronis on it because I only need the stick for system backups of the 3 OS. No way to get around the Acronis installation?

Klaus, see forum topic: Create a bootable USB device for BIOS with MBR partition - which may help here?

Also topic: USB boot drive on older model laptop "Operation System not found".

The other thought here would be to try burning the ISO image to a CD or DVD and see if this will boot correctly in Legacy mode, or try a different tool such as ISO to USB

Check your machine bios and see if you have both Legacy CSM and UEFI boot enabled, I think you do.  If you do then change this option to Legacy CSM boot only.  If Rufus and/or Unetbootin have written both type boot files to the medium you're using then that medium should show in the boot menu without the UEFI notation.

If that fails then you need to make sure that when you use these tools to create the medium that you specify that creation will be MBR/Legacy so that the boot files written to the medium wil be written to the medium.