I burned about 250 jpegs onto a CD-R and when I checked them out, all the jpegs were read only. Any comments are appreciated.
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Last night I tried to review some of the old digital pictures and to my desperation I discovered I can not reads CD?s from 2002 and 2003. I tried on 4 different CD_ROM drives (including the one used to burn the CD?s in the first place) and the result was the same: I could read the directory structure but not individual .jpg files. Then I attempted to copy the files on the HD but XP reported CRC error. I even tried to copy the files with old mighty DOS and still it fails for every single file.
Is there any hope I could recover some of the files on those CD?s?
The home burnt CD that last a ?life time? is just a myth !
Do we really have any other alternative but burning the CD/DVD collection every 2 years?
Submitted by Ovidiu M. of Melbourne, Australia
I can only offer an untechnical observation but I have found that many of my CDs of all types burned on a variety of burners frequently fail in as little as 2 years. Sometimes I can 'resurrect' one using a ripper or persevering with another reader but overall I find them totally unreliable - even less so than floppy disks!
None of these tecnologies has been properly tested and refined because the manufacturers are all hell bent on getting the next generation medium out to reap yet more profits and hang the quality.
Yup! You are spot on, but I've noticed that labelling with them thar printable sticky label type identifiers screw up the disks, I have found that simple small marker type pen does the trick!
I have disks that are several years old, the ones with the labels start to misread after about 2-3 years, whereas the marker pen ones perform o.k without any problems!
NOW, MY QUESTION IS, IF I STORE FILES ON A U.S.B FLASH DRIVE, HOW LONG WILL THE FILE LAST IF YOU LOADED THEM ON, LEFT THEM IN A DARKENED DRY DRAW (WITHOUT BUNGING THE DRIVE BACK INTO A U.S.B PORT), HOW LONG WILL WILL THEY BE VIABLE/READABLE?......COME ON YOU BRAINY GUYS AND GALS OUT THERE,YOU MUST HAVE SOME SORT OF INKLING?
PS.IN A FORMER POST I SUGGESTED THAT MAYBE OLD EDISON WILL HAVE THE LAST LAUGH AS VINYL/SHELLAC RECORDINGS WILL LAST VIRTUALLY FOR A LIFETIME IF THEY ARE STORED IN A REASONABLE WAY!
I HAVE NOW DISCOVERED THAT INDEED YOU CAN BUY A LASER READER TURNTABLE FOR YOUR OLD VINYL/SHELLAC RECORDS, SO THERE IS NO NEEDLE/STYLUS WEAR AT ALL!!! IT COST'S AN ARM AND A LEG THOUGH!
SO, WHO'S GONNA BE THE MANUFACTURER THAT BRINGS OUT A READ/WRITE TYPE VINYL/SHELLAC RECORDER THAT BURNS THE MEDIA IN A DIGITAL FORM,.....BET YER *** SOMEONE SOMEWHERE IS WORKING ON IT?
There is a lot of discussion and differing views regarding what labeling methods corrupt data on discs and what methods doesn't. There seems to be two camps here. Those who say that discs can be corrupted by labeling methods and those that say they have never experienced any data corruption. Fine. Both are correct but may I suggest that where there is smoke there is fire? Obviously certain inks and adhesives can cause data loss in certain discs under certain conditions. Why take a chance and why press your luck? If something was worth burning and labeling to begin with why not do everything you can to protect your discs? When playing Russian Roulette you have an 83% chance of not having your head blown off. Still those are tough odds when so much is at stake. Why not swallow your pride and just label your discs with an unquestionably safe method? I use a DiscPainter to label my discs. It prints on printable discs which offer an extra layer of protection against data corruption. The ink used is water based and not solvent based. I don't know about you but I would rather play Sicilian Roulette. That's a game where you know you will always win.
Even though nothing lasts forever but surely things can last very long. The same thing should apply to CD/DVD-Rs. The question is how. I myself made a lot of backups on DVD-Rs, and yes some of them, after awhile, are not flawless in terms of pefect readibiliy. Some bytes will eventually become unreadable, rendering files that contain them unusable. However from my experience, I learn several tips (some of which were also mentioned somewhere in the other posts).
1. Do not use the full capacity of the disk (especially for DVDs). A single layer DVD can hold up to 4.7GB. Use around 4 GB only. As you will notice, usually (if not most of the times) unreadable bytes take place in the outer part of the disc (near the edge). Unreadable bytes not only happen because of the physical factor (scratch, etc) but also happen because of weak laser. Some old drives have difficulty reading data on the outer part of the disc. This also suggest to never use the overburn feature.
2. Do not write with maximum speed. Although I can't prove it scientifically, I believe that writing with medium speed results with better writing on the media.
3. Despite of the brands, careful handling and storage of the media is crucial. Basic known facts are to keep them in a cool, dark place. What I can add is, use silica gell to control humidity in the storage place.
4. Do not use the backup CDs for daily data retrieval. The more often the CDRs are used, the bigger chance they can be corrupted by many factors. So, just backup (and make sure it is written successfully) and keep them. Do not use it for daily purpose, but only in times of emergency (like data restore).
5. Always prepare to create a new set of backups after every period of time. As for me, I check my CDs every year. So far, even four-year old DVDr are still okay (I started using DVD-Rs about 4 years ago). For CDs, some of mine are already over ten years old and they're all practically okay.
Having said that, don't forget redundancy. Having multiple sets of backup discs that contain the same data won't hurt. Even though the data are still perfectly intact in the media, after a period of time you might want to create a new set of backups. After along time, you will have several sets. In case of unreadable bytes, no two CDs would lose bytes on the same spot, so, having multiple sets will help to restore broken files.
So, backing up to CD/DVD-r? Why not!