Lesson 11 Chapter 2 - Optical Drives Flashcards
Optical drives that enable you to write to optical discs are called ______
burners
Each of the 3 main optical drive standards is backward compatible, T or F?
True
Example, Blu-Ray read/write to CD and DVD, DVDs read/write CDs
From oldest to newest what are the 3 main optical drive standards?
- Compact Disc (CD)
- Digital Versatile Disc (DVD)
- Blu-ray Disc (BD)
What are 3 other ways that discs and drives are classified? (Whether or not they’re…) (3)
r, r, re
- Recordable (single write)
- Rewriteable (multiple writes) [CD, DVD]
- Recordable-Erasable [BD]
What’s the difference between a CD-R and CD-RW?
R: Single write (recordable)
RW: Multiple rewrites (rewriteable)
What type of disc is recordable-erasable?
Blu-Ray Disc
What is a drive/disc that is not writeable called?
ROM (read-only memory even though it’s not actually memory) such as CD-ROM, DVD-ROM
[Such as commercially produced music, movie, software discs]
What are the 2 writeable DVD format standards?
batteries
+ and -
What discs can have one layer? Which discs can have 2 layers [dual layers]? (2 groups)
1 Layer: CDs
2 Layers: DVDs, BDs
Optical drives in modern computers support what kinds of DVDs and Blu-ray discs?
Optical drives in modern computers support dual-layer DVDs and Blu-Ray discs
Modern computers can ___, ___, and ____ to all the popular types of blanks
- read
- write
- rewrite
What does CDFS stand for?
Compact Disc File System (CDFS)
What is CDFS? What uses it?
CDFS is the unique volume format that optical discs use
What’s another name for CDFS?
CDFS = ISO 9660 file system
more accurately known as this
What 2 capacities do CDs come in?
650MB to 700MB
You need a ___ ___ capable drive to read and write ___ ___ discs
You need a dual-layer capable drive to read and write to dual-layer discs
What does the capacity of a DVD and Blu-ray rely on?
How many layers it has
What does it mean when a (DVD, not Blu-Ray) disc is double-sided? What do you have to do?
It means you have to flip the disc over to access the second half of the data
All 3 of the optical media varieties are available in 3 types:
r, r, r
- ROM read-only
- Write-once (R)
- Rewritable (RW)
What’s the capacity difference between a single-sided and double-sided DVD? [Actual size]
Single-Sided: 4.7GB
Double-Sided: 9.4GB
(Dual Layer DVD discs are basically double in capacity ie 8.5GB, 17.1GB)
What type of disc can be single-sided (SS) or double-sided (DS)?
DVDs only
What’s the capacity of a single-layer Blu-ray disc and mini Blu-Ray disc?
25 GB
Mini blu-ray: 7.8GB
Optical drive bays are called 5.25” bays but in reality are more like ___ wide
6”
(just like hard drive bays are known as 3.5” but are more like 4 inches”
What is an ISO file?
It’s a complete copy of an optical media disc (an ISO image)
How do techs use ISO images?
They use ISO images burned on CDs to send each other copies of bootable utilities
(they go to the website, download the ISO image, and burn the ISO image onto the disk)
Since optical drives aren’t popular anymore, what’s an alternative when you want to burn an ISO image to a writeable CD/DVD?
You can copy the ISO image to a USB Flash drive using a free Windows utility
(then you can boot from the flash drive!)
What does ISO stand for?
International Standards Organization (publishes the standards for most aspects of technology and manufacturing)
ISO files are named after the ISO 9660 file system not the actual organization (though they did create the file system)
How do you test for improper physical connection (for a drive)?
Use the BIOS/UEFI setup utility to see whether the system can see the drive
If the optical drive won’t read a particular disc, try a __ ____ disc that is in good condition
non-writeable disc
(certain types of writeable discs may be incompatible with the drive, or it might be badly scratched)
If there are still disc read errors in an optical drive, what else can you do and how do you do it? (2)
Clean the drive with its built-in cleaning mechanism (if it’s modern) or use a commercial optical drive cleaning kit
How do you clean an optical disc? How should you never wipe it? (2)
- Damp soft cloth with mild detergent, alcohol, or display cleaner
- Always wipe from the center of the optical disc to the edge NEVER use a circular motion
