The issue only occurs with the PowerBook 5300 and 2300, and only when the PowerBook is in SCSI disk mode.
If the PowerBook has a disk driver installed by Drive Setup 1.5 or 1.6, files copied to (not from) the PowerBook may become corrupted if the files are larger than 128k. The original files on the host computer will not be damaged.
Note: This issue has been fixed in Drive Setup 1.6.1, which has been posted to Apple Software Updates.
This article can help you locate the software update mentioned here: