Hi,
your Linux partitions won't show in Windows; that is why you cannot see them, when you say get back disk space, do you mean resizing the Linux partitions?? because that is the only way you will get back disk space.
With the bootloader, when you installed the OS, you should have selected "sda1" MBR which is where your bootloader should go, if you want to, you can download boot repair for future use.
viewtopic.php?f=6&t=1895To repair the boot manager using the Zorin disk, boot the live CD and open a terminal and type:
sudo update-grub
This will also repair the bootloader.
If I were you, I would start again this time making sure you don't import files and resize your partitions to the rquired size, also don't encrypt your folders!!. (Windows will not read Linux files/partitions!)
For partitioning see also:
viewtopic.php?f=6&t=1616See also the post install guide for Zorin 6:
viewtopic.php?f=6&t=2054Regards Wolfman