MacOS Volume not using full HDD capacity.

Interesting... for some reason your system has extra EFI partitions on your internal hard drive, which won't show up in Disk Utility. Follow these steps (specific for your case) to fully uninstall Windows from your Mac.

1. Log into an administrator account.
2. Open Terminal, located in Applications -> Utilities.
3. Run "diskutil list" again and make sure that you have the same disk identifiers as the ones you posted. If they change, let me know.
4. Run these commands (in order from top to bottom) to delete the extra EFI partitions and the Microsoft Reserved partition:
   1. diskutil erasevolume free free disk1s3
   2. diskutil erasevolume free free disk1s4
   3. diskutil erasevolume free free disk1s5
   4. diskutil erasevolume free free disk1s6
   5. diskutil erasevolume free free disk1s7
5. Run this command to resize your Mac startup container on your internal hard drive back to full size: diskutil apfs resizeContainer disk1s2 0
6. If successful, your Mac should now have its full TB of capacity back.

Optional steps to remove Windows from Startup Manager

Even though Windows is now removed from your Mac, it might still show up in Startup Manager (by holding down the Option key while your Mac restarts). This is because the Windows bootloader still resides in the hidden EFI partition on your Mac. If you try to boot Windows at this point, you'll get a blue screen of death, and you'll have to force restart your Mac.

To remove the Windows bootloader and its components, complete these steps (assuming your disk identifiers remain the same):

1. Back up your Mac with Time Machine, so that you can restore your data in case something goes wrong. Do not skip this step.
2. Log in to an administrator account.
3. Open Terminal, located in Applications -> Utilities.
4. Run this command to mount the hidden EFI partition on your internal hard drive: sudo diskutil mount disk1s1
5. Terminal will ask for your password. Type your password when prompted and hit Enter (Return). Terminal won't show anything as you type the password.
6. A message should appear in Terminal that the EFI partition is now mounted. Quit Terminal.
7. Open a Finder window, and do one of the following:
   1. If an EFI volume appears in the sidebar, select it.
   2. Press Command-Shift-G, then paste this path and hit Enter (Return): /Volumes/EFI
8. The EFI partition should have exactly three folders inside: APPLE, Boot, and Microsoft. Verify this is the case before continuing.
9. Delete the Boot and Microsoft folders. Enter your admin password if prompted.
10. Restart your Mac to apply the changes.

Your Mac should start up perfectly fine, but if it fails to start up and shows an error icon instead, erase your Mac and restore from the Time Machine backup.

nunya65 wrote:

Error: -69716: Storage system verify or repair failed

I don’t even want to resize it anymore I just wanna make a new APFS container with the remaining free space

Ok... are you sure?

Your Mac has a Fusion Drive inside. It actually consists of 1 TB hard drive and a small (128 GB) SSD, which work in tandem to improve read/write performance. However, if you choose to create a second APFS container using the free space:

• By default, it doesn't take advantage of the SSD, decreasing performance
• It won't appear as free space for your startup volumes. Instead, it will appear as a separate volume with limited capacity, making things more complicated.

I think the best route for now is to still resize your startup container back to full size. Fortunately, you can now use Disk Utility to do the resize since the extra partitions were removed (assuming you ran those "diskutil erasevolume" commands I mentioned).

Try completing these steps to resize your startup container back to full size:

1. Start up your Mac normally and log into an administrator account.
2. Open Disk Utility, located in Applications -> Utilities.
3. In Disk Utility, choose View -> Show All Devices.
4. Select the "Container disk2" entry under the internal drive and choose Partition.
5. If you're asked to add an APFS volume, choose Partition instead to confirm your intent.
6. A large portion of unused free space should appear in the pie chart. Select the free space, then click the (-) button to return that space to your startup container.
7. Choose Apply to start the resize operation. This may take some time to complete and your Mac might freeze temporarily. This is normal.
8. If successful, your Mac should now have its full TB of capacity returned.

If you run into an error during the resize, complete these steps:

1. In the partitioning progress dialog, select Show Details. (It's a small text label next to a triangle pointing right.)
2. Copy the full contents from the report that appears, and paste them here.

(Despite these steps, if you still want to convert the original free space into another APFS container, you can use the Partition system in Disk Utility to do so. Please be careful and make sure to back up your system first.)

Hi nunya65,

We usually recommend using Boot Camp Assistant to uninstall Windows, since there's also some hidden EFI files that Windows uses to boot. Just deleting the Windows partition won't remove those hidden files.

Nonetheless, can you please complete these steps to describe your disk. I can use this to provide the remaining steps you need to regain your disk space and uninstall Windows.

1. Eject and disconnect all external drives.
2. Open Terminal, located in Applications -> Utilities.
3. Type "diskutil list" without the quotes and hit Enter (Return).
4. Post the output here.