>>>>> "Herbert" == Herbert Poetzl <herbert@xxxxxxxxxxxx> writes: Herbert> - the drive doesn't report 4k sectors at all, not Herbert> even as physical sector size. There have been numerous threads on this list about EARS not reporting block sizes correctly. Check the archives. Herbert> My question now is, how can I tell the kernel that this drive Herbert> actually has 4k physical sectors and that it would be a smart Herbert> thing to send requests in some kind of 4k I/O chunks? Align your partitions on a 4K boundary. -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html