Installing Lubuntu 20.04 LTS on a laptop, something is wrong with partitioning

I am trying to install Lubuntu on a laptop but not even 10 seconds into the start of the install, I receive an error saying that the partitioning failed. The error message is the following:

The installer failed to create a partition table on WDCWD10JPVX-60JC3T1

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Create a new partition table (type: gpt) on 'dev/sda'

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Job: Create a new partition table (type: gpt) on 'dev/sda' ====================================================== =======================================================

Command: sfdisk /dev/s

===================================================== I suspect that it has to do with the boot/efi partition, but I am not sure. The laptop is currently booting on UEFI mode and has Windows 10 installed which will be overwritten once I am done. Here's my latest partitioning table that failed for some reason:

/boot/efi, 1.0 GiB with "boot" flag

no mount point, 16.0 GiB with "swap" flag

/ (root), 30.0 GiB with "root" flag

/home, 100.0 GiB with no flag

The rest of the space has no mount point and is just formatted with ext4 for storage.

Is something wrong with my configuration? I feel like I need a partition with GRUB (or something similar) mount point. I tried to stay true to the recommended partitioning scheme that I read on the Ubuntu wiki. Any help is highly appreciated.

UPDATE:

It turns out that there was a partition (on the current state of my hard drive) with a lock sign and a cd-rom mount point that could not be unmounted/modified in any way. I erased that partition on Windows 10 and now the installing is running fine, so far at least.


Solution 1:

In my scenario, I had to manually create my partitions by installing and using gparted in the live environment, then setting up the partitions manually. This was because I wanted to keep my existing /home partition.