Can anyone try to test bdwrite's output with this tool:
for Netbsd created 2.50 udf on hard drive file it requires -blocksize 512, but for real bluray image blocksize must be 2048 (default)
$ ./udf_test -blocksize 512 ~/udfimg.img > log
there is linux (386) binary, but of course I compiled it anew, on termux. no scsi support, but othervise seems to work