"operation system not found" eroor after instaling linux mint

[odd ravine]

https://forums.linuxmint.com/viewtopic.php?t=380811#google_vignette
I have found this forum talking about the same problem but i didnt understand the solution so can somoen help

[dull crow]

basically you need to set in your BIOS for UEFI to be enabled and boot the live usb as UEFI and install

[odd ravine]

https://foxclone.org/downloads/20230509-LM21_legacy.pdf i have already found the solution i think

[naive loom]

... solved