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MiniTool Partition Wizard free has an option to set a partition as logical. Not sure how it would work. I would delete that HP_TOOLS partition. I've never used mine. But if you want to keep it, you can use MiniTool Partition Wizard free to move the HP_TOOLS partition to the end of the drive, and that would put the unallocated space next to D: drive where it could be added to D: drive - or D: Drive could then be moved over and the free space added to C: Drive.
Just curious - if you don't want to actually create a new partition, why do you want to convert your current partitions to logical?
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I want to install Ubuntu in the free space. Ubuntu doesn't support more than 4 primary partitions. I want to keep HP_Tools partitions as well.
You could also try the Ubuntu live version and see if it has tools to convert primary partitions to logical, if Partition Wizard doesn't do it. I would definitely move the HP_TOOLS partition to the end first to get it out of the way, though.
I agree about using Minitool Partition Wizard. You should be able to convert all of the partitions to Logical. I've done the reverse before, converted Logical to Primary so I don't see why you could not do the opposite.
Yes, right click on the partition in PW and choose "Modify->Set Partition to Logical" - Do it to all of the partitions and then hit "Apply"