Will the floppy disks disappear???...
Guys,
Reading this article here it made me think (and ask you) about the floppy disks future. The article says Dell will stop using floppy disks for some of their computers models replacing these floppy drives with other bigger storage alternatives.
What do you think? Will the floppy disks disappear in the future? Do you want this to happen or do you prefer to keep it to store and carry small info quickly?
Personally, i don't care if it disappear but only if they are replaced by other similar and better storage systems with more capacity to store data. Zip drives aren't the exact good replacement yet. Not everybody can have a Zip drive and weren't made exactly to replace floppys.
What are your opinions?
Thanks,
DKRR
The CD Is Not All Your Data File, But Also Other Areas...
CD-ROM drives acturally are faster, but there is a lot more work that needs to be done to the CD first. It needs to test the laser before writing, read/write a TOC, write a couple MB of *BLANK* data (that's right, *BLANK* data), write your file, and more *BLANK* data. Also, the error-correction data... But, at least 10-13.5MB of *BLANK* data per track, if I remember correctly.
There is quite a lot that goes on when you make a CD. There might be much more things that can vary between CD-ROM drives than Floppy Drives. For example, not all lasers write at the exact same darkness, but they are close enough in most cases that it is easily cophensated for. There might be some stuff like that for a floppy disk, but there is much less to keep track of, and it is much faster, and probably more field-proven, seeing as to how long they've been used.
I personally don't see the use of using a CD for a small file - even a 1KB file would acturally take up about 14MB on a CD. Floppies are easily reusable without having to erase for as long as a CD (CD-RW bulk eraser?), and you can decorate them easier by putting multiple labels on top of each other. But, I like the Floppy Disk for small stuff, my Memory Stick (128MB Flash) for medium / daily files, and at times a CD for huge files and backups.
CD Data Format Information (Mainly Audio CD, but applicable)
Where I got this info from: CD Architect Help File
BTW, the Orange Book talks about Recordable CD’s
Quote:
Power Calibration Area
Within every compact disc there is a PCA that is reserved specifically for testing the power of the CD-Recorder laser being used, and a Count Area which keeps track of how much available space is left in this area. Each time a disc is inserted into the CD-Recorder drive, a calibration is automatically performed to determine the optimal laser power for “burning” the disc. Over time the power level of the laser will need to be adjusted to properly respond to changes in recording speed, temperature, humidity, and the condition of the disc. Each time this calibration occurs, it is incremented in the Count Area. A maximum of 99 calibrations can occur on one disc.
That is where laser brightness, etc., is calibrated...
Quote:
Lead-In Area
The Lead-In Area comprises approximately the first two minutes on any compact disc and is generally unused for recording actual audio data. The main purpose of this area is to store the Table of Contents (TOC), which keeps an account of each track’s location on the disc. The TOC is written to the Lead-In Area of the disc once all of the information has been recorded to the disc. Before the TOC is written, only the recorder can access the disc. Once the TOC has been written to the disc, any CD player or drive can play the disc.
That was for the TOC...
Quote:
Lead-Out Area
The Lead-Out Area contains 90 seconds of silence (blank sectors) and serves as a buffer area in case the player reads past the last track on the disc. This area essentially does nothing more than let listeners know the music is over. Lastly, the Lead-Out and Lead-In Areas are the portions of the disc most likely to be damaged as a result of handling. As you know, discs are most commonly handled by the edges, if audio was stored in these areas, it would likely become difficult for your CD player to read.
The BLANK data. 90 Seconds - about 1.5Min, about 8MB/Min, so about 12MB of blank data... There are similar things one a per-track basis, I think, but I don't know for sure...
-Tim_axe