Aloha- I've been trying w/no success to clear/erase CD-RWs using Apple's Disc Utility (OS 10.3.3). The discs indeed appear in the Disk Utility tree as CD-RWs but then under the write status as "read only". I've tried to erase several different discs but either don't even get the "Erase" button activated or get the following error when I start the erase process: "Optical Erase failed Optical Erase Failed with the error: Whole disk required, slice passed" Any suggestions? I would rather not buy specific 3rd-party software to erase CDs/DVDs but if I must what software do you recommend? Thanks!