51. what is the difference between burning and ripping

Page content loaded. Jul 23, AM in response to essendon17 In response to essendon Jul 23, AM. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive. First reboot will be slower, sometimes 2 or 3 restarts will be required for full benefit Disconnect the USB cable from any Uninterruptible Power Supply so the system doesn't shut down in the middle of the process.

The disc I was trying to copy when this started was 4. I already used Disk Utility to Repair Permissions, but not in the "Safe Boot" way that you've described -- I just ran it probably not the smartest thing, I guess -- but I have everything backed up on an external drive with Time Machine.

Would doing it that way make any difference? I have to go out of town for a couple days here in a few hours. Jul 23, PM in response to essendon17 In response to essendon Jul 23, PM. Well, I downloaded and ran applejack -- it didn't help.

Tried to burn and it hung up and made another coaster again. So I figured I'd waste another disc and try looking at the Console while burning, as you suggested.

Does any of that mean anything to you or anyone else? Jul 26, AM. Jul 26, PM in response to essendon17 In response to essendon Jul 26, PM. I don't know how it could be a dust issue -- it CAN'T be dust in the drive itself, as I installed a NEW drive, and it's behaving in the exact same way.

I suppose it could be dust somewhere else in the machine on the board or somewhere? But burning of paper is chemical change because new substance is formed that is ash and it is not irreversible. Recommend 3 Comment 0. When paper burns,it forms ash, a new substance, which is a chemical change,when paper is torn,it goes through no change,which is defined a chemical change. Recommend 2 Comment 0. Raghavendra Paripelli. Ans: Tearing of paer is a physical change because no new substance is formed, as the paper's colour will be the same.

By tearing a paper there is no change in paper and by buring a paper it changes into ash. Therefore tearing apaper is physical change and burning a paper achemical change. Merlin Dinesh. When you tear a papers the paper remains the same only the shape or sizeis changed and we can also use that paper again. Recommend 1 Comment 0. Anand Iyer. Tearing if paper is a physical change because no new substance is formed.

Whereas when you burn paper,a new substance- ash is formed. Tearing is a reversible change while burning is an irreversible change. Devavardhan Cs. Tearing of paper do not forms a new substance. But burning of paper forms a new substance. Ayush Singh. Tearing is physical change because paper changes it's shape but when paper burns it forms a new substance called ash so that is why it is called chemical change.

Gauravjha Jha. Some software products offer the possibility to write a new file system without references to logical blocks where the old 'deleted' files are stored. When this modified disk is inserted in a computer only the last file system is read and it would appear that some files are gone.

In fact you can use special software like IsoBuster to access any existing session on that disc. Not only creating another section does not reclaim disk space, a big amount of space is wasted for the new file system itself and the pause between two tracks containing previous and current session.

Quote from: j7n on I didn't read about the option to use packet writing in this thread. For me packet writing software in combination with DVD-RAM media has proved to be a very convenient reliable backup method. Let me see if I can simplify this better. I thought I was being precise in explanation, but apparently not. And for that, I appologize to those trying to assist me here. For example: Last week or so, I had 10 or 12 files in which I thought might be worth keeping for a while.

Some were songs, short clips,. Anyways, I took those files and just Cnt. I can't see the CDs you are describing and don't know if they're written to or not.

But I'll try to answer your original question: Is it better to use a burning software or use Windows built-in functions. Rewritable optical discs were not designed for random access, you can't really erase single sectors easily. Because the depth of the pits is approximately one-quarter to one-sixth of the laser's wavelength, the reflected beam's phase is shifted in relation to the incoming reading beam, causing mutual destructive interference and reducing the reflected beam's intensity.

This is detected by photo diodes that output electrical signals. This changes the reflectivity of the dye, thereby creating marks that can be read like the pits and lands on pressed discs. For recordable discs, the process is permanent and the media can be written to only once. While the reading laser is usually not stronger than 5 mW, the writing laser is considerably more powerful. The higher writing speed, the less time a laser has to heat a point on the media, thus its power has to increase proportionally.

DVD burners' lasers often peak at about mW, either in continuous wave and pulses, although some have been driven up to mW before the diode fails. Depending on the amount of power applied, the substance may be allowed to melt back change the phase back into crystalline form or left in an amorphous form, enabling marks of varying reflectivity to be created. Double-sided media may be used, but they are not easily accessed with a standard drive, as they must be physically turned over to access the data on the other side.

Double layer DL media have two independent data layers separated by a semi-reflective layer. Both layers are accessible from the same side, but require the optics to change the laser's focus. Traditional single layer SL writable media are produced with a spiral groove molded in the protective polycarbonate layer not in the data recording layer , to lead and synchronize the speed of recording head.

Double-layered writable media have: a first polycarbonate layer with a shallow groove, a first data layer, a semi-reflective layer, a second spacer polycarbonate layer with another deep groove, and a second data layer. The first groove spiral usually starts on the inner edge and extends outwards, while the second groove starts on the outer edge and extends inwards.

One of the first differences between CDs and DVDs to note is in the amount of data storage that is possible with each device.

The typical DVD will provide in the range of seven times the capacity that is available on a compact disk. DVDs make use of a series of recording layers and also store data on both sides of the device, which makes a big difference in the storage capacity. The older technology associated with the CD does not allow for these same applications. A true CD player would not be able to read the disc.