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If you recorded over the previous recording you cannot retrieve the file. If your recorder/player says you have a blank disc due to accidental erasure you can restore the original disc if you have a deck or portable. Go here for info: http://forums.minidisc.org/index.php?showtopic=19929 best of luck.

Approx 3" X 6" X 1 1/2" this thing is almost a brick and 4 (FOUR) AA batteries? The elegance is gone!

I can fix your deck if you like...

Hey raintheory, I'm extremely impressed with your detailed instructions on TOC cloning using the R700 and G750 portables. My one comment would be the practicality of opening up and modifying a perfectly good mini disc player. Even if the average person in here had some sort of skills to perform the 'mini'(micro)-surgery the harm that might happen to the unit concerns me. I love taking things apart and putting them back together. I have a box full of all the spare parts I had left over from all the re-assemblies of computers, carburetor, hard drives, vacuum cleaners, keyboards, refrigerators, belt sanders, clocks and TV's I fixed. I found it amazing that after all the repairs I performed, my appliances and computer gear worked fairly well (if not almost as well) as the manufacturer originally intended. I assumed that most manufacturers overcompensate in their designs by giving the consumer more screws and springs and things that are actually needed for the appliance to work. As a mater of fact, I'm utilizing all the spare parts I collected over the years to build a vacuum computer that can sand floors, tell you what time it is so you can watch a TV program on time as you make coffee and keep cool while getting really great gas mileage. Patents are pending. I would like to think that Sony or Sharp would include this 'overcompensation of parts' in their production of portable mini-disc recorders but because the parts are so microscopically small for everything to fit into one of these things, I find it highly unlikely. Would it be a silly idea to just buy an inexpensive mini disc deck to use not only for an additional recording source but to restore the TOC? These decks can be had for about $120.00 now. As I posted, I use my deck to restore TOC in erased discs with minor problems. It must be that my deck needs some adjustments...wheres my screwdriver?

Recordable MD's are similar, but a pre-groove replaces the pits and valleys and an MO coating replaces the aluminum one. When recording, a laser is focused from one side of the disc onto the pre-groove and heats a spot on the MO recording layer to its Curie point while a magnetic field from a head in contact with the other side of the disc aligns magnetic domains within (read: magnetizes) the heated spot on the MO layer (the N/S orientation corresponding to 0s and 1s in the data). During playback the MD machine focuses the laser on the pre-groove again, but at lower power, and the data is read back by measuring changes in polarization of light reflected from the previously magnetized regions (the Faraday effect)." When you think about the mind (s) that came up with all that, it boggles mine.... Simply amazing!

I'm listening to a recording of Howard Sterns radio program from May 14 2007. I thought I lost this recording but yesterday I restored it with a TOC/clone fix. Howard talks about his girlfriend and He interviews Hansen all grown up....lol Hey you asked.

I guess the fact that what all the discs really do is store digital information you are correct sir. I have to keep remembering it's all ones and zeros with pits and flats (peaks and valleys?). The mechanism would be the key ingredient for professionals and serious home record-ists. I have a few of the discs with plastic shutters....Awful...lol Rain...I finished the draft on cloning the TOC...you might want to check it out. I would assume your management had a good reason other then differing disc sound quality. It must be the casing and shutter around the disc that would be less susceptible to breakage or jamming. Makes sense.

I was wondering if anyone has done a comparison between the manufacturers of mini-discs. Other than the quality of the shell and mechanism, does the actual spinning disc differ in quality from one manufacturer to another? I have an assortment of discs from different manufactures and I've detected no difference hearing the audio in SP, but would it be detectable to hi-tech equipment like oscilloscopes? The best discs I've seen are the ones from Sony, Neige 74 or 80 minute discs. Even the case has enough texture to it so it doesn't slip out your hand when stacked together. Do professional audio techs prefer one brand from another? Does one company make just the disc and then ship it to different manufacturers that incorporate it into there case? Silly question I guess but I got nothing else to ask at this time...lol

Hey raintheory, I restored 4 mini discs so far. The amended procedure for my deck MDS-JE470 is as follows: Disc A A blank disc that you record nothing on. See below Disc B The original disc that was accidentally erased Take a blank disc and Record (in the same format) "nothing" for the length of the disc." Turn off the deck and let the TOC write to the disc. Lets call it Disc A This disc can be used for future restores so hold onto it. 1. Insert Disc A into the deck. 2. Cut power to the deck (pull the plug or use a switchable outlet on your amp) 3. Press AMS knob and restore power to the deck at the same time. .....Your in Service mode TEMP CHECK is on the display (don't touch any other controls). 4. Eject Disc A 5. Insert Disc B (The original disc you accidentally erased) 6. Cut power to the deck. (pull the plug or use a switchable outlet on your amp) 7. Turn the deck back on .....You will see that the counter will read one full track. 8. Press play (you original recording will play) 9. Divide the 1 track or write to the disc 10. Press stop 11. Turn off the deck for the "write" to take effect 12. Turn on the deck to see if the TOC wrote to the disc. .....Your disc should be restored. I'm a bit crazy with this. I've held on to discs for over a year that were accidentally erased and I thought were lost. After 2 restores I got it down to a science and it takes about 4 seconds for the 12 steps once you get the hang of it. What I'd like to do is write the original author who over complicated the instructions and offer our revised instructions after your comments. REVISED PROCEDURE 09/17/07 10:17 PM REVISED AGAIN 09/18/07 2:56 AM Every time I restore an original disc it seems that a different procedure is required for it to work on my deck. Please verify the above and let me know if the instructions I wrote are OK. Revised 09/25/07 The above procedure does work BUT...if the original disc that's to be restored was one full long track, you might have TOC write problems trying to edit it after the restoration. If your original recording had more than on track or if there was room on the disc for additional recordings, the method as outlined will work for the decks as described. All I want to do is sleep....lol

Great idea! One thing I want to do is clone another disc so I can be sure of the procedure I performed. I believe you don't have to edit the disc giving it a name or date. I did this initially and it didn't work. The second time I tried it, I just played the mini disc as usual after the clone and then I let the TOC do the editing when I turned the machine off. I'm proud to me a member of the MDtoCCC

I did it! I thought I screwed up the 5 plus hours of recording "nothing". The first try didn't hold (must have done something wrong with naming the disc) but I simply reinserted the blank disc again and performed the required steps. I have my recording back. I'll have to edit at the commercials again but it will keep me happily busy. The great thing is I believe I can reuse the "nothing" blank for all of the discs I have to restore. So I might not have to record another 5 hours. Seems logical? The tricky part was pulling the plug and pressing buttons. Then I realized I could plug the mini disc deck into an outlet on my receiver that turned off when I turn my receiver off. I guess that would qualify it as sneaking up on the deck. I'll do another test and restore another disc and define and augment the instructions but they were pretty clear after you and I went over them. Again raintheory...thanks so much for your help.

Raintheory, I'm giving this a try today. I started to record a blank disc so in about 4 1/2 hours I'll make the attempt. I found out there is no easy way of entering test mode with my deck. I found this: http://www.minidisc.org/manuals/sony/servi...vice_manual.pdf A few additional "tricky" maneuvers. I'll have to integrate these instructions (if they work) into our compilation. Wish me luck....lol

Excellent...Einstein would be proud of both of us. You sir...Are a peach!!!

1. Take a blank disc and Record (in the same format) "nothing" Lets call it Disc A 2. Let the deck write the TOC 3. After the TOC writes to this disc give it a name or date. Let the TOC re-write this info. 4. Go into TEST mode (don't press anything after this) 5. Eject this disc while in TEST mode 6. Insert the disc that was mistakenly erased. Lets call it Disc B 7. Pull the power cord to turn off the machine 8. Plug the machine back in The mistakenly erased disc will be restored onto Disc A Paraphrasing Einstein...Keep things simple, don't make them simpler. The instructions on that link is a perfect example of over-writing. It pre-supposes-pre-suppositions and mixes them together with the instructions. Did I miss anything?

Thanks so much for your help with this. I'll read all the instructions throughly. Because I have to read up on some of the definitions like "dirty the TOC" and "source disc" and "super undo" I'll try to simplify all this so I can understand it. In the instructions there is a term like "tricky part" or sneakily eject the disc without the machine knowing....LOL. These terms have prevented me from performing this proceture in the past. I'll have to take a blank disc, record on it (with no line source) for 5 hours and 23 minutes then go through the instructions carefully. I assume that after I record "nothing" for 5h:23m I'm to somehow sneak up behind the deck and pull the power cord. What was Sony NOT thinking by not having a simply way to do this. They have an "undo" function in the menu selection. Unfortunately I turned off the deck after the disc read was "blank disc" Had I not turned the machine off, I might have been able to simply undo the last edit the machine made. Again..thanks for all the time you put in helping me.