Disclaimer: This software was originally written by Phil Norman and Matthew Wilcox; since then I have somewhat taken over development.
The official home page of IscaFS can be found here.

This software is for ARM-powered computers running RISC OS. If you are using Linux, Windows or anything else, then don't bother downloading this program.

IscaFS allows RISC OS (3 or higher) to read ext2/ext3 image files and hard disc partitions. It is released under the GNU GPL.

Changes from release 0.16 to 0.17:

• Fixed the "empty filer window" bug surfacing on machines with lots of memory (read: Iyonix). Thanks to Chris Terran for finding the cause of this bug.
• Adjusted module version number in the "!Run" file which had been wrong the last few releases.
• Fixed a bug concerning comma-separated file type information.

Changes from release 0.14 to 0.16:

• Fixed bug in two-level cache system. Now that it finally works as intended, performance improved radically (up to 300%).
• File type sprite now looks a bit like a directory.

Changes from release 0.13 to 0.14 (just bug fixes):

• Fixed bug in two-level cache usage (cache A wasn't used at all).
• Fixed bug which could result in stale cache entries being used. This only surfaced when dismounting volumes (for example floppy discs). Thanks to Rien Mertens for reporting that bug.
• Fixed time/date conversion code. No longer off by 0.76 seconds.

Changes from release 0.12plus to 0.13:

• Fixed "The Last Bug", which prevented RO5/Iyonix compatibility. Thanks to Daniel Ellis for finding it and helping to fix it.
• Added "PartTool" program as an alternative to "GetPartns" and "ReadPart". It can create pseudo image files and partition dumps.

Changes from release 0.12 to 0.12plus:

• Thought to be RO5-compatible (but wasn't). Replaced the MAlloc module with a 32bit-clean version, so now it should run on Iyonix.

Changes from release 0.11 to 0.12:

• Fixed a bug which could freeze the machine when scanning empty dirs.
• Added MimeMap support. IscaFS now maps filename extensions to filetypes.
• Spaces in filenames are converted to Alt-Spaces.
• Better handling of "," characters in filenames.
• The IscaFS module is now 32bit-clean. But the MAlloc module isn't, so IscaFS still won't work with RO 5.
• Added helper program to display UNIX file mode bits under RO.
• Correctly recognizes UNIX special files.
• Tidied up the documentation.

Changes from release 0.08 to 0.11:

• IscaFS now really copes with partitions larger than 4 GB.
• IscaFS now copes with all three ext2 block sizes and the standard ext2 features called "sparse_super" and "filetype" - in short, IscaFS now really works.
• Numerous bug fixes. Read the docs. :)

Disclaimer: This software was originally written by Phil Norman and Matthew Wilcox; since then I have somewhat taken over development.
The official home page of IscaFS can be found here.

Have fun!