I've installed Ubuntu 20.04 on a disk partition in a new HP laptop, but are unable to boot into it. I found that there are issues with dual booting on HP machines using UEFI and some successful workarounds (https://ubuntuforums.org/showthread.php?t=2392797).
My problem is that when booting from an Ubuntu live USB, I'm unable to mount any of the partitions on the hard drive.
GParted throws this warning when started: GParted warning - space unused
And all partitions cannot be mounted, with variations of
Unable to detect file system! or
Unable to read the contents of this file system!. GParted - partitions list
This is what appears in the description of the Linux partition:
The device /dev/nvme0n1p3 doesn't exist Failed to open '/dev/nvme0n1p3'. The device /dev/nvme0n1p3 doesn't exist Unable to read the contents of this file system! Because of this some operations may be unavailable. The cause might be a missing software package. The following list of software packages is required for ntfs file system support: ntfs-3g / ntfsprogs.
This problem was happening also before the installation, but it seems to have gone through without error.