I have recently decided to Ubuntu along the windows 7. when I arrived to the partition management section, I Created a root 30Gb partition from 70Gb usable space, so rest of the space got unusable and i couldn't create /home and swap partition. would you please help me to use this space? I'm a beginner. Thanks.
2 Answers
Try to create a partition with this space. If you cannot, try making a Windows 7 ISO and reinstalling everything on the hard drive. You cannot extend live EXT4 partitions. This could also be full of bad sectors which is essentially poison and could be why you can't use the space.

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You should be able to fix it by running the Ubuntu installation tool from your BIOS. If you set Ubuntu to install alongside (notice the alongside, please) Windows 7, which will pop up when you are selecting installation options, it should automatically install Ubuntu the same way that you are trying to install it, without errors (unless you stop the installation for some reason)
It should work similarly if you would make an attempt to reinstall Windows 7. You can select where and how to install Windows 7, which would involve creating a new partition.

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sudo parted -l
– Soren A Apr 28 '21 at 13:55