Importing File Hierarchies

Currently, importing arbitrary sets of files into EaaSI as a “Files”-type object (whether Software or Content) is only supported if the file set is “flat”; that is, it is not possible to select a directory as part of the file set, only a series of individual files.

This is unideal for either:

  1. Extremely large file sets where manual or drag-and-drop file selection would be cumbersome

  2. File sets with nested directories where it is essential to preserve the directory structure/file hierarchy for proper function or interaction in an emulated Environment.

As a work-around, the EaaSI team currently recommends packaging such complex file/directory sets locally as an ISO disk image and then importing to EaaSI as an “ISO”-type Software or Content object.

The EaaSI platform uses the Linux tool mkisofs to package and mount flat “Files”-type objects in emulation. For maximum compatibility across emulated guests, the EaaSI team recommends doing the same, using the following command:

$ mkisofs -J -r -hfs -o [output_filename.iso] [/path/to/target/directory]`


  • -J: generates Joliet directory records in addition to ISO9660 file names (primarily useful for using in Windows 9x/NT systems)

  • -r: generates Rock Ridge file ownership permissions on the ISO9660 file system (clears ownership information from your system that may/will conflict with user information in emulated Environments)

  • -hfs: generates a hybrid ISO9660/HFS CD system (required to properly mount in classic Mac OS systems)

  • -o [output_filename.iso]: the specified name for your output/new ISO disk image

  • /path/to/target/directory: the file path to the directory (including any nested files and sub-directories) that you would like package and upload as an EaaSI object

mkisofs can be installed on macOS by installing the cdrtools package via Homebrew; on Windows the EaaSI team recommends either installing mkisofs via the Windows Subsystem for Linux or using the xorriso-for-windows tool, which maintains cross-compatibility with mkisofs syntax.