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High Density CDs

Posted by michael on from the totally-incompatible dept.

goofrider writes "Sanyo introduced a new format called HD-Burn, supported by their new DVD+/-RW chip. It allows the drive to burn up 1.4GB of data using a regular 700MB blank CD-R blank. The resulting HD-Burned CD-R can only be read by supporting DVD/DVD-ROM drives and CD-ROM drives. Most DVD/DVD-ROM drives can support the format via a firmware upgrade. It's unclear how easy and how likely will it be for future drives to support this format. In contrast, Plextor released their new GigaRec technology in their new PlexWriter Premium (read a review here). GigaRec also records on regular blank CD-Rs, allows up to 1GB of data on a 700MB disc. however, the disc can be read on any modern good-quality CD-ROM drives with no firmware upgrades required. So now I can record 2x the data on a CD-R but I still can't have filenames longer than 64 characters. :)"

12 of 362 comments (clear)

  1. When do we start punching holes in them? by wowbagger · · Score: 5, Funny

    So, history repeats itself again - higher density on older media.

    When do we start punching holes in them and flipping them over?

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    1. Re:When do we start punching holes in them? by L.+VeGas · · Score: 3, Funny

      I remember punching holes in floppys with my Dad. Man, those were the days...

      Yeah, so do I. Except we called it "choking the chicken".

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  2. I still can't have filenames longer than 64 charac by Anonymous Coward · · Score: 5, Funny

    That's okay. Here on Slashdot, you can't have subjects longer than 50 characters (as you can see above).

  3. Get a Mac by BWJones · · Score: 3, Funny

    So now I can record 2x the data on a CD-R but I still can't have filenames longer than 64 characters. :)

    Why not? Don't you have a Macintosh? :-)

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  4. Bah, I developed this myself.... by mblase · · Score: 4, Funny

    It allows the drive to burn up 1.4GB of data using a regular 700MB blank CD-R blank.

    I rewrote my drivers some time ago to provide exactly this level of performance, through the simple but clever technique of only writing 1's to the CD and skipping all the 0's, which the CD drive never reads anyhow.

    Well, okay, I rewrote the "write" portion of the code. The "read" portion is still giving me trouble, but I'm confident it's just a matter of time.

    1. Re:Bah, I developed this myself.... by TeknoHog · · Score: 5, Funny

      You should now notice that the CD only contains ones, which means huge redundancy. You can do a lossless compression of these ones into a single 4-byte number, which only tells the number of ones. It doesn't make the read portion any harder, but you'll save a lot of space.

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    2. Re:Bah, I developed this myself.... by mikeee · · Score: 3, Funny

      You'll save even more space if you replace the "1"s with the letter "l", which is slightly smaller. Also, consider decreasing font size, and possibly going to italic to pack them more tightly.

  5. 64 by Duncan3 · · Score: 4, Funny

    ThisIsA64CharacterFilenameBoyIsItLongImSureDespera teToUse65.txt

    Yea, i'm worried :)

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    - Adam L. Beberg - The Cosm Project - http://www.mithral.com/
  6. Jeez by Beatbyte · · Score: 5, Funny

    but I still can't have filenames longer than 64 characters...

    Yes its such a bitch to pay 20 cents for a CD-R and not be able to name your backups 'thursdayaprilthirtyfirsttwothousandthreeelevenfif teenandthirteenseconds.tar.gz'
    'thursdayaprilthir tyfirsttwothousandthreeelevenfif teenandfourteenseconds.tar.gz'

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    Get paid to code OSS
  7. 64 Characters !?! by Anonymous Coward · · Score: 5, Funny

    64 characters eh? Back in my day we only had eight. And we didn't have any of your fancy pants lower case letters to fool around with either....Bah!

  8. Re:Recursive compression by cyber_rigger · · Score: 3, Funny

    Couldn't you use the "1 only" write technology
    to further compress the 32 4-byte number(32 bits)?

    It would then only take 5 bits.

    You could then just memorize the number and you wouldn't need a CD at all.

  9. Re:You can have filenames as long as you like by 2short · · Score: 4, Funny

    Because people want to name files what they want to name them, and not think about the filesystem.

    True story:
    Back in my days of tech support for DOS-based academics, I was trying to help a user recover some files after a crash. The file naming scheme seemed really weird, so I asked her about it. She explained she was really frustrated by only getting 8 + 3 charachters for a filename, and then she discovered you could make filenames as long as you wanted, you just had to put a back-slash afer every eight charachters. I did not attempt to explain directories.