Window 7 is indeed able to read the UDF 2.01 file system created with `format-udf` (`mkudffs` from `udftools` 1.3). Whenever I run `CHKDSK` on Windows 7, however, it "finds" some errors and "fixes" them:  The next time I run `CHKDSK` against the same file system, it finds the very same issues. I understand this most probably can't be easily fixed, but probably the issue should be mentioned in the documentation/release notes.