A rim file extension is related to the BackupSoft backup format. The BackupSoft apps bundled Acer and Toshiba with some external drives.
There is one other file type using
the RIM file extension!
.rim - Dragon Age Origins game archive
RIM file extension - BackupSoft backup
What is rim file? How to open rim files?
File type specification:
The rim file extension is used for backup files created with BackupSoft.exe program, that was bundled to some external hard drives sold by Acer or Toshiba.
It seems like the program is not supported in Windows 7, and users might find trouble while restoring backups from .rim files. If you experience this, try to run BackupSoft.exe in Windows XP compatibility mode.
This rim file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.