Group: Forum Members
No you don’t need to store those files somewhere other than C, and you definitely would not want to choose a drive letter for a Rescue Media device you’ve created, or really any device that is not permanently connected.
The files you’re asking about serve two main purposes:
1. They act as a cache of your last Rescue Media build, so if you need to create a new Rescue Media device (such as another flash drive) and the cached build on your system is still current, then Rescue Media Builder will just copy those cached files over. If the build is stale or has been deleted, Rescue Media performs a full WIM rebuild, which takes longer.
2. They enable the boot menu recovery option if you choose to enable that. In that case, yes you are booting into Rescue from files located on (by default) your C partition. However, that is just an optional convenience for non-catastrophic failure conditions. For example, it can be especially handy for people who use Rescue frequently, such as application testers that perform frequent rollbacks, because that option allows you to access Rescue without having to grab your external Rescue Media flash drive. But if you DO have a Rescue Media flash drive, then that is a self-contained entity, meaning it has no dependencies on other files existing anywhere else in order to boot into Rescue. So no, you would not need the files in the file storage path to be available to successfully boot from your Rescue flash drive.