Ubuntu does not recognize the windows partition and cannot install ubuntu.

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There has always been a problem. When ubuntu 12.04 was installed, some computers could not recognize the windows partition, which made it impossible to install ubuntu … This happened many times, including Dell’s and others.Lenovo G490Yes, they are all installed on the basis of windows7, always like this (see picture). . . It looks as if it was caused by UEFI from Microsoft. Is there a solution?

请输入图片描述

This problem seems to exist in ubuntu Chinese forum. Please go to the forum and search for it.