Lost Partition on internal virtual memory after windows bootcamp

Hi, Chewwy65!

Thanks for using the Apple Support Communities. Based on your post, I am understanding that you're trying to use Boot Camp Assistant to install Windows on your MacBook Pro, but can't find the partition you created, even though it's clear that the storage space allotted to it is not on your Mac partition. I understand needing that partition available, or at least being able to get the storage from it back, and am happy to help.

First, try the instructions under the "Remove the partition" section of the following article:
Set up a Windows partition on your Mac
If you're not able to remove the partition using Boot Camp Assistant as the article above directs, then back up your Mac partition, erase your hard drive, and reinstall OS X before trying Boot Camp Assistant again.
If you're not familiar with backing up your data, you can use the article below to walk you setting up and using Time Machine.
Use Time Machine to back up or restore your Mac
After you've backed up, go through the steps in the article below to erase your hard drive. Since El Capitan is your startup disk, you'll need to load the computer into Recovery by holding down Command+R on the keyboard while turning on the Mac.
Disk Utility (El Capitan): Erase a volume
Then, reinstall OS X using the following article.
How to reinstall OS X

After OS X has been reinstalled, use the following article to make sure your Mac is compatible with the Windows version you're attempting to install, and then try Boot Camp Assistant again.
System requirements to install Windows on your Mac using Boot Camp

Cheers!

Please post the output of

diskutil cs list

Chewwy65 wrote:

Though have a new question. When in the windows partition, is there a way I can access my files from Mac partition?

Based on the problem you encountered, your OS X installation is using a Logical Volume Group and a Logical Volume inside the LVG on the OS X partition. It can be confirmed using the Terminal command I provided. If you have a CS LVG/LV it cannot be read by Windows.

However, if you are not using FIleVault2 or Bitlocker, it may be possible to revert to a underlying file structures and allow read access.

Can you post the output of the diskutil cs list command?

This is not an error. Can you post the output of

diskutil list

In this disk partition configuration, you should be abel to read OSX partition from the Windows side. It use the AppleMNT.sys and AppleHFS.sys drivers. If these drivers are not properly installed, run setup.exe from the Bootcamp folder.

Your original question about 'lost' space does not seem to be the case anymore.