The latest version of macOS, High Sierra, has some major changes for the Mac including a new filesystem, APFS. Apple has worked hard to make the transition seamless but there are a few things you can do prior to upgrading. Here is what you need to do:
Backup
All Macs that have SSDs drives will have the Mac filesystems converted to APFS. Once converted, you cannot convert back to HFS+, so backups are especially important. This does not change the filesystem for Windows, but data is moved around in a pretty significant way during the upgrade.
Make a clone of your Boot Camp with the latest version of Winclone 6. In case there are problems upgrading with the filesystem and partitioning, you will be able to quickly restore your Boot Camp partition. On the Mac side, we recommend Carbon Copy Cloner. Carbon Copy Cloner creates a bootable backup, so if you have a failed update, you can boot directly to the backup and keep working.
Update to the latest versions of Winclone and Boot Runner
Winclone and Boot Runner have been updated to be fully compatible with High Sierra, and you should make sure that you update both of them prior to upgrading your system.
Winclone
If you already own Winclone 6, you can update to the latest version of Winclone 6 right in the app. Go to the Application menu and select “Check For Updates”. If you are currently have Winclone 5 or earlier, you’ll need to purchase to Winclone 6 for Winclone to work on High Sierra (Winclone 5 is supported 10.9 to 10.12). Purchase Winclone or download and purchase right in the Winclone 6 app.
To see all the new changes for Winclone 6 on High Sierra, visit the High Sierra Winclone 6 support page.
Boot Runner
Boot Runner has been updated to support High Sierra and the new APFS filesystem. To upgrade to the latest version, go to the redownloads page and download the latest version of Boot Runner.
To see all the new changes for Boot Runner on High Sierra, visit the High Sierra Boot Runner support page.
Support
If you have any questions or run into any issues, visit the Twocanoes forums.