Click Apply, then click Partition to confirm.OSXRESERVED and BOOTCAMP are empty partitions that Boot Camp Assistant created during the failed installation.Click BOOTCAMP in the graph, then click the remove button (–).Click OSXRESERVED in the graph that appears, then click the remove button (–) below the graph.If Disk Utility asks whether you would like to add a volume to the container or partition the device, click Partition.In the Disk Utility toolbar, click Partition.Select your Mac startup disk (Macintosh HD) in the sidebar.Open Disk Utility, which is in the Utilities folder of your Applications folder.If Boot Camp Assistant says that the startup disk cannot be partitioned or restored to a single partition, complete these additional steps: “Your disk could not be partitioned” Possible Causes You’ll be clicking on the link “install Windows support software manually” (here is the direct link here If Windows Support Software isn’t installed after you run Boot Camp Assistant – Apple Support) For the rest of the process follow step #5 from the above article.As you go through the Windows installer, make sure to reformat the “Boot Camp” partition using the installer tool (this is step #4 from this help article Install Windows on your Mac with Boot Camp – Apple Support).You’ll see an option called “Windows” to boot from.Restart your Mac and enter into the boot selector (hold option key while restarting).Manually copy all the contents from the Windows 10 ISO to the OSXRESROUCES volume.(This format will allow you to write larger files than the FAT 32 format) Use Disk Utility to erase the newly created “OSXRESERVED” partition, and with the erase feature, choose the ExFAT Format.They are named OSXRESERVED and BOOT CAMP. Boot Camp will attempt to roll back the parition, but close Boot Camp so those two new partitions are kept.Go to the point of failure where you get the error message.This fix is a bit technical, if you don’t understand it, I’ll suggest you take your computer to a professional. You don’t have enough space on your hard drive.