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not a bootable image

Ezger

New member
Joined
Sep 10, 2025
Messages
14
Motherboard
msi b450m mortar
CPU
ryzen 5 3600
Graphics
msi gtx 1070 ti gaming x
Mobile Phone
  1. Android
long story short, after wasting almost 10 days on trying MacOS 14x and 15x on gtx 1070ti ,
am installing high sierra cause its the only version that supports acceleration for 1070ti

problem is , every single high sierra .iso or .dmg file i donwload cannot be bootable
"""
it looks like this is not a bootable image; the image does not appear to contain a partition table and mitht not be recognized or bootable by your device

"""

i kinda need to copy the custom EFI folder in the usb EFI partition before installation,
am stuck
 

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