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Ubuntu Failed to install and now I don't know which partition it's on so I don't have access to my other 500GB

rated 0 times [ 2] [ 0] / answers: 1 / hits: 696 / 1 Year ago, wed, february 15, 2023, 5:31:15

I tried to install Ubuntu 20.04 LTS on my Windows 10 system as a dual boot. It got all the way to the end and told me that the drive was unclean (Can't remember exact warning); Research told me that something with the safe boot could have messed it up but I found out that I can achieve what I needed with a Linux subsystem. Now the failed Ubuntu install is holding my other 500 GB hostage because it had partitioned my drive before failing. Since windows is installed on my SSD, would I have to worry about vital stuff getting deleted if I just delete the partition that says "EFI System" since Ubuntu uses EFI?

How can I figure out which partition it took so I can delete it and gain back that space? I worry about deleting a vital partition and completely screwing my computer up. I have two drives, one is a 128GB SSD and the other is a 1TB HDD, it seems to have partitioned my HDD but I don't know if it installed its self on my SSD too, either way I just need the space back. I should have paid more attention but I've never had a problem when doing this before so I just blew through the installation...I've learned my lesson. Can anyone give me some advice?

Extra Info: I can boot into Ubuntu but it just takes me to a command line. If I enter 'exit' it takes me to a MOK screen where I can supposedly register keys and such. When I exit the MOK screen it defaults to windows because there isn't anything to boot into. Would I be able to get some sort of identifying information from the command line that could help? The names of the partitions are the exact same except on says "Healthy (EFI System)"

Partition image with windows

Ubuntu/Grub command line

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terneive

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answered 1 Year ago erranbe · Accepted Answer

Disk 1 partition 3 is the partition that according to you, Ubuntu is holding hostage. You can safely delete this and get the space back. But as you have the EFI system partition in the middle, you will have trouble combining it with the D: partition. There are workarounds. For example, you can do this with the Easeus Partition Master Paid version. You can find a safe crack if you try. (I found a safe one from YouTube.) You can also delete the EFI system partition (after finding whether it is safe to do so with Microsoft Community and/or Microsoft Community Advocates.) and combine the partition with D:. Another way to use that space is to assign a new drive letter like E: and use it as a separate partition.