CD-R disks: ********************************************
The data area on the disk can only be written once.
Once this physical area on the disk is used, it can not be used again.

When a file is "deleted" from a CDROM, the data area is just marked as unusable, and as more files are added, eventually all the physical "data space" on the disk is used up and no more data can be written to that disk.

The CD-R disk can be programmed to:

1. allow access in only CD-RW drives (this can be changed)
2. allow access in any CDROM drive (this can be changed)
3. prevent any additional data from being written to the disk (READ ONLY!)
   ... (this can only be done one time - obviously!)

CD-RW disks: ********************************************
The data area on the disk can be written many times.
The physical area on the disk is used over and over just like a hard disk drive.

I do not know the "life" of a CD-RW but I am sure it has a finite "life."

---

The cost of CDROMs (purchased in bulk, i.e., 50 or more) is about the same as a 1.44 MB floppy disk. (e.g., about $.30 each)

A CDROM holds, typically, 700 MB or the same as 486 floppy disks.

I usually keep 50-100 CD-R disks in my supply cabinet and I use them as freely as I would 1.44 MB floppies. When a CD-R disk goes bad, I simply throw it away.

I backup all my expensive software on two CDROMs because it costs very little to do that.

I hope this info helps.

cheers,
dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019