What is the difference between CD-R & CD-RW. Why it is not possible to erase any file from CD-R? I want to know whether it is linked with hardware or software?
2007-06-17 05:17:46 · 6 answers · asked by Dr. Homo sapiens 2 in Computers & Internet ➔ Hardware ➔ Add-ons
CD-R can be formatted... ONCE, usually to UDF/MDF. Once it's formatted, it pretty much won't be of use to anything else.
As others said, CD-R you can only write to ONCE (the portions you did NOT write to can still be written to later) Whereas CD-RW can be re-written / reformatted and erased.
Why? That's the way CD-R works. The marks are actually BURNED onto the media by a laser. It cannot be unburned. Why do you think they are called "burners"?
CD-RWs use a different technology (phase change) to record the on/off bits. It requires very different circuitry. CD-R is most similar to original CD standard, which is why CD-R is almost universally compatible whereas CD-RW compatibility must be specified.
So to answer your last question: hardware.
2007-06-17 05:48:56 · answer #1 · answered by Kasey C 7 · 0⤊ 0⤋
Technically you may format a CD-RW with the intention to erase it and use it back. yet you are able to format a CD-R in a feeling. some courses will allow you to 'practice' a CD-R so as which you will write to it 'on the fly'. yet this has very intense overhead (filespace) and would deliver approximately matters with different structures being waiting to examine it.
2016-11-25 03:07:13 · answer #2 · answered by ? 4 · 0⤊ 0⤋
No. CD-R means CD-Recordable...ONCE it is a WORM (Write Once Read Many) disc. CD-RW means CD-Re-Writable, which allows it to be written and erased several times.
2007-06-17 05:21:41 · answer #3 · answered by Shadow Hawk 2 · 2⤊ 1⤋
It's related to hardware. You can just cut whatever it is on a CD-R, so who uses it won't see those files, but they take physical memory.
2007-06-17 05:24:01 · answer #4 · answered by psycho_x52 2 · 1⤊ 1⤋
no CD-R can not erase
but can be overwritten
just copy new stuff
CD-RW you can erase all
2007-06-17 05:22:22 · answer #5 · answered by Q&A Answer Mans Retired 7 · 1⤊ 1⤋
No. CD-R means that after you burn it, it is done. You can't do anything about it affter you burn it.
CD-RW mans that you can burn it, but you can burn it again and again and it can be edited.
2007-06-17 11:07:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋