It may just be a file extension, but inside those 128 kilobytes lives the glory of a gaming generation.
Simply copy epsxe000.mcr to a cloud folder (Google Drive, Dropbox) or an external drive. To restore, paste it back and overwrite the existing file—but ensure ePSXe is when you do so. epsxe000.mcr
Like physical memory cards, .mcr files can occasionally "corrupt" if the emulator crashes during a save operation. It is best practice to keep periodic backups of the epsxe000.mcr file manually. It may just be a file extension, but
Yes. DuckStation can read raw .mcr files directly or convert them to .mcd automatically. epsxe000.mcr