Your disk is a GPT because of the EFI system partition and therefore you would need to use the diskpart convert GPT command shown in the guide. The third and final type of Recovery Media is DVD Backup. BC has a guide for doing a clean install. In reality the factory image is <16 GB and a 16 GB USB Flash Drive should be used. The downside is you would need to reinstall all your programs. Just FYI a clean install of Windows 10 is always preferable to an upgraded system. If you decide to delete the partitions I can provide the steps using Partition Wizard. One partition that is not normally shown in Disk Management it the MSR partition after the System Partition which in Windows 10 is 16MB but may be different on your disk because it was an upgrade. You would need to do this with a Partition Manager like Partition Wizard and I would not do it unless your personal data was backed up to another device. That could also be deleted but this can be helpful because it lets you check your hardware at boot. The 40MB partition is for Dell Diagnostics.
After deleting them you could move/resize your C: partition after moving the 450MB partition. I believe your could delete both the PRB and 750MB partitions. If the drive letters for those partitions are unassigned I don't believe you would get those errors.
I would wait for jenae to reply but in the mean time open a command prompt and type the following commands.ĭiskpart Opens the diskpart command prompt
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