Can’t add files to CD-RW w/ UDF format

I have formated CD-RW with Roxio and Nero InCD as UDF. On my T30 IBM laptop I can read and add files and read after adding files or changing. If I take the CD-RW to another PC and using UDF drag and drop a file to it, I cannot read the files on the CD-RW on the T30 laptop.
The drive will read CDR’s always.
Does anyone have any suggestions?