udfclient is suite of udf-related utils developed for NetBSD<div><br></div><div>Available for debian-based distros and arch, but notably not for rpm-based distros according to <a href="https://repology.org/project/udfclient/versions">https://repology.org/project/udfclient/versions</a></div><div><br></div><div>can you download orig. tarball and patch it with attached patch and try to  </div><div>&#39;./configure / make&#39; it on Linux box with normal {for us} gnu make? And run resulted udfclient from build dir?  ./udfclient file.img (-W for writing) </div><div><br></div><div>Also, can you try to compile my hack on newfs_udf  from NetBSD current? just make in source tree.. might fail due to no configure at all. this is slightly different newfs_udf command, creates udf up to maximum revision 2.60 (with some limitations). My hack most likely will not work directly on optical drive - but it worked for me on small image file. Can you test it on large file too? </div><div><br></div><div>both hacks already on my github (but I am not sure I uploaded files correctly via their webinterface) </div><div><br></div>