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Why optical disk is not used in hard disk?
Optical disks are defined as "Write Once/Read Many" media. Some optical disk can be re-written. This is accomplished by burning the first layer smooth and writing the bit bubbles again. This can only happen a few times before the optical media is spent. Magnetic disks are defined as "Write Many/Read Many" media. This is what is needed for the continued operation of a computer over any extended duration.
Is a CD an optical media?
Only if it is a CD containing a film/something that you can watch. CDs with music aren't optical media.
What is the purpose of the optical drive?
An optical drive is for reading and possibly writing to optical media such as a CD or DVD. It is pretty much used like any other drive in a computer. Older optical drives could only read data and could not burn disks.
What is the max memory of a CD worm?
CD-RA CD-R (Compact Disc-Recordable) is a variation of the Compact Disc invented by Philips and Sony. CD-R is a Write Once, Read Many optical medium (though the whole disk does not have to be entirely written in the same session) and retains a high level of compatibility with standard CD readers (unlike CD-RW which can be rewritten but has much lower compatibility and the discs are considerably more expensive). Some people jokingly refer to these media as CD-PROM since they are the optical analogy to Programmable read-only memory.Example:Philips Optical Worm 12gb 12in 1024b/s (LM6000) Media
Is ROM a storage device?
ROM = Read Only Memory This is a permanent storage device, usually a chip or an optical disk. Depending on the device, it is written to once, and then is read-only There are some variations, including PROM (Programmable Read Only Memory) and EPROM (Erasable Programmable read only memory)
What type of memory is data only written once?
PROM can only be programmed once
Explain the use fo the UDF file system and how it applies to a DVD?
The Universal Disk Format (UDF) is a standardised file system for optical discs. The UDF standard was adopted by the DVD Consortium as a standard format for DVDs. Although a standard there are variations which means that not all discs can be read by all suitable machines.
What media is not magnetic storage media?
Non-magnetic storage media include: CDs, DVDs, Laserdiscs, and Blu-Ray (optical) NAND, Flash, and SD devices (thumb drives, SD cards, and Solid State drives) RAM drives and SRAM (Static RAM) RFID and similar radio-cards (typically read-only) EEPROM and other reprogrammable data, such as Firmware (electronic) If we want to get oldschool, it can also include Punch Cards (optical)
Disc can only be written to once What?
CD-R
What disc can be only written once?
CD-R
What CD can be written only once?
A CD-R can only be burnt on once,whilst a CD-RW is re-writable
Is optical disk a permanent storage media?
No, files can be erased from Read only discs with certain types of software. However, by doing this you can't put anything back on them like you can with a Re-Writeable disc.
