1. Check out hdf4, configure, make, make install 2. Check out an hdf5 1.8 version, configure, make, make install 3. Check out h4h5tools. You can use my copy at /mnt/ftp/pub/outgoing/bmribler/h4h5tool-issue: h4h5tools-2.2.3.tar, quicker. I don't remember how I got that now... 4. Build h4h5tool: ./configure CC=/bin/h4cc --with-hdf5= --prefix= gmake, gmake install 5. Go to your location where the h4 file (provided in HDFFV-10274) is 6. setenv LD_LIBRARY_PATH /lib 7. Run h4toh5 tool: /bin/h4toh5 8. Now, you can run the current h5dump on your system on that hdf5 new file NOTE: If you want to use a specific svn version of 1.8, get the long number from the git log, and do the commands as in the following example: cd <1.8 clean version> git checkout 582afd39e30142ace3e192ebe0a575ff9ba3413c from git log: commit 582afd39e30142ace3e192ebe0a575ff9ba3413c Author: Neil Fortner Date: Thu Feb 12 14:01:19 2009 -0500 [svn-r16476] Purpose: Fix rare error when adding a new object header message Description: Since the new object header format, it has been possible for a situation to be created where none of the messages are large enough to hold a continuation message and there are no null messages to merge with. This makes it impossible to add a new object header chunk. This case will now be handled by moving every message in the last chunk to the newly allocated one, except for null messages which are deleted. Tested: jam, smirom (h5committest)