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Topic: Disk drives

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floppy disk

hard disk

disk drives

compact disk

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disk mathematics

disk jockey

Compact Disk single

Redundant array of independent disks

hard disk drive

accretion disk

hard disk drive partitioning

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	Using disk drive motors
		Disk drive stepper motor can be used as freely rotating motor quite easily by using the stepper motoro controller from the disk drive.
		Disk drive stepper motors consist two coils which move the motor to the desired direction when a current is applied to those coils in correct order.
		The only difference to disk drive system is that the disk drive electronics can buffer the movement signals, so that the controller stores the movement pulses and executes the muvement after the controller has received the last movement pulse.
	www.epanorama.net /circuits/diskstepper.html (3530 words)

	' + pPage + '
		Purely optical disk drives often are used as a secondary form of storage, but the computer to which they are connected is likely to use a magnetic storage medium for primary disk storage.
		Data on a disk is read by passing the head back over the surface of the disk; as the head encounters changes in the stored magnetic field, it generates a weak electrical current that indicates the presence or absence of flux transitions in the originally recorded signal.
		When the drive is commanded to move the heads to a specific cylinder, the internal drive electronics use the signals received by the servo head to determine the position of the heads.
	cma.zdnet.com /book/upgraderepair/ch14/ch14.htm (20439 words)

	What is disk? - A Word Definition From the Webopedia Computer Dictionary (Site not responding. Last check: 2007-10-21)
		On magnetic disks, data is encoded as microscopic magnetized needles on the disk's surface.
		Optical disks record data by burning microscopic holes in the surface of the disk with a laser.
		Accessing data from a disk is not as fast as accessing data from main memory, but disks are much cheaper.
	www.webopedia.com /TERM/d/disk.html (628 words)

	Hard disk drive Help
		The four main components of a hard disk drive are the platters, head arm, chassis, and the head actuator.
		The majority of computer hard disk drives are permanently stored in an internal drive bay at the front of the computer and are connected with one ATA / SCSI cable and power cable.
		Unlike other drives the hard disk drive is the only drive that is not physically accessed by the user like the floppy disk drive or the CD-ROM drive.
	www.computerhope.com /help/hdd.htm (505 words)

	Floppy Disk Drive Primer
		Floppy disk drives were originally introduced commercially as a read-only device to hold microcode and diagnostics for large IBM mainframe computer systems in the early 1970s.
		In most drives, this is an optical sensor which must be adjusted such that when the system is first powered on, or recalibrated, (ie, blindly sent to track 0 by the controller), the drive's heads are able to be placed accurately at the starting track 0.
		Often the drive's test points are difficult to locate, especially when the drive is installed in a computer, and of course using an AAD requires that one be well versed in the usage of an oscilloscope, etc. It is also very helpful to have some knowledge and experience maintaining diskette drives.
	www.accurite.com /FloppyPrimer.html (3613 words)

	FAQ - Floppy Disk Drives
		Are the floppies write protected; i.e., when looking at the back of the floppy with the metal door down, the little tab in the rectangular hole at the top, left of the floppy blocks light.
		If the floppy drive LED stays on all of the time, you have the flat cable plugged in backwards on either the motherboard or drive; the red stripe goes to pin 1.
		Symptoms: When a floppy disk is inserted into floppy disk drive and the directory is displayed, the directory of the floppy that was previously in the drive is displayed.
	www.duxcw.com /faq/fd/fd.htm (422 words)

	Computer Stupidities: Disk Drives
		Our librarians misassume that they are all power users, and she had taken it upon herself to disassemble the drive (it was an external drive to a laptop) and couldn't visually find a problem, so she asked that I order a new one.
		A customer called complaining that his "hard drive won't boot." After determining there was a floppy disk in the A: drive, I suggested that the customer remove it.
		The night operator, apparently not sure if the problem was with the drive or the disc pack, stuffed the pack into the next drive in line, crashing that one, too, as the heads encountered the plowed-up aluminum from the first crash.
	rinkworks.com /stupid/cs_drives.shtml (3229 words)

	Hard Disk Drives (Site not responding. Last check: 2007-10-21)
		Hard disk drives are almost as amazing as microprocessors in terms of the technology they use and how much progress they have made in terms of capacity, speed, and price in the last 20 years.
		The hard disk's performance is also critical when multitasking is being used or when processing large amounts of data such as graphics work, editing sound and video, or working with databases.
		This includes a full dissection of the internal components in the drive, a look at how data is formatted and stored, a discussion of performance issues, and a full analysis of the two main interfaces used to connect hard disks to the rest of the PC.
	www.storagereview.com /guide/guide_index.html (583 words)

	What is disk drive? - A Word Definition From the Webopedia Computer Dictionary (Site not responding. Last check: 2007-10-21)
		A disk drive rotates the disk very fast and has one or more heads that read and write data.
		There are different types of disk drives for different types of disks.
		Disk drives can be either internal (housed within the computer) or external (housed in a separate box that connects to the computer).
	www.webopedia.com /TERM/D/disk_drive.html (449 words)

	Floppy Disk Drives
		Today's floppy disk drives have evolved almost as much as the PC over the past 15 years.
		The HowStuffWorks site has a detailed article that includes a history of the floppy disk drive, a description of the parts of a floppy disk drive, and information about how data is written to, and retrieved from, a disk.
		If so, visit this ZDNet page where floppy disk drive components are identified and defined for those people who choose to repair or upgrade their floppy drives.
	www.infoweblinks.com /content/floppydiskdrives.htm (469 words)

	Howstuffworks "How Hard Disks Work"
		Nearly every desktop computer and server in use today contains one or more hard-disk drives.
		You can even find VCR-type devices and camcorders that use hard disks instead of tape.
		These billions of hard disks do one thing well -- they store changing digital information in a relatively permanent form.
	computer.howstuffworks.com /hard-disk.htm (139 words)

	Hard disk drive manufacturers on STORAGE search .com
		Over 90% of the disk drive manufacturers which existed in the 1990's have gone bust, or merged, or have been acquired by other disk companies.
		As hard drives have become cheaper and more rugged and able to survive rough handling by road warriors, there has been a growing trend to use disks instead of tape as the primary form of backup by SOHO users.
		Coughlin Associates estimates that by 2008 the industry as a whole could be shipping 544 million hard disk drives a year with 34% of that number going into consumer electronics (up from 13.6% of total drive shipments in 2004).
	www.storagesearch.com /diskwin.html (4072 words)

	LabMice Hardware Guide: Disk Drives
		This sites been around a long time (would you believe 30 years), and is a very comprehensive market study of the computer disk drive industry.
		Other hard disk drivers are not included here, as the 1024 cylinder limitation usually doesn't apply.
		In this article, file structure on a hard drive will be covered -- tracks, sectors, cylinders, etc., plus you'll find out what happens when you format and partition a drive.
	labmice.techtarget.com /hardware/diskdrives.htm (843 words)

	Howstuffworks "How Floppy Disk Drives Work"
		The floppy disk drive (FDD) was the primary means of adding data to a computer until the CD-ROM drive became popular.
		Basically, a floppy disk drive reads and writes data to a small, circular piece of metal-coated plastic similar to audio cassette tape.
		In this article, you will learn more about what is inside a floppy disk drive and how it works.
	computer.howstuffworks.com /floppy-disk-drive.htm (158 words)

	Disk Drives
		The option to allow disks with more than 1024 cylinders, which the AHA1542C card can recognize, is only required as a workaround for a PC-compatible BIOS misfeature and should be turned off under Linux.
		SCSI disks are accessed by linear block numbers.
		I haven't gotten the straight scoop on thembut they are becoming a very common problem at the SVLUG installfests.
	www.tldp.org /FAQ/Linux-FAQ/disk-drives.html (260 words)

	Disk Drives
		How to connect an IDE disk to a microcontroller using an 8255 from Thomas Brandon [tom at psy.unsw.edu.au] by Omar Martinez [omartinez at hartford.com.ar] or Peter Faasse [faasse at nlr.nl] depending on who you talk to today.
		The specification for ATAPI (IDE) CDROM drives can be obtained from: ftp://fission.dt.wdc.com/pub/standards/atapi/spec/SFF8020-r1.2/sff8020.ps In here you will find the complete command set detailing how to play audio tracks (among other things).
		Floppy drive information can be found in the data sheets for many FD controller chips.
	www.piclist.com /techref/drives.htm (687 words)

	Toshiba - Storage Device Division
		Toshiba, The World's Automotive Hard Disk Drive Market Leader, Announces Its New 30GB HDD
		Toshiba Hits 100 Million Milestone For Hard Disk Drive Shipments
		Imation Selects Toshiba 2GB 0.85-Inch Hard Disk Drive For Use In Its Micro Hard Drive
	sdd.toshiba.com (114 words)

	Seagate Technology (Site not responding. Last check: 2007-10-21)
		Read why PC Magazine calls Seagate's External Hard Drive a "very good addition" for securing your data at home or the office...
		Seagate is setting storage free to bring you a new digital world of unbridled possibilities...
		Seagate Delivers New Family of Barracuda Drives with up to a Massive Half Terabyte of Capacity and Fast 3 Gbit/second Serial ATA Interface...
	www.seagate.com (133 words)

	USB Floppy Disk Drive RAID
		4 of the drives connected to the generic powered USB hub (must be powered) this hub is connected to the extra keyboard USB port on my iMac.
		I also understand that carrying 5 USB floppy drives around is not exactly portable, but there is something special and amazing about the speed of this floppy cluster.
		It is really cool when you access the drives the way they flash each light and spin in no particular order that I can discern.
	ohlssonvox.8k.com /fdd_raid.htm (966 words)

	Home : Hardware : Disk Drives
		This switch allows Windows to terminate interrupts from the hard disk controller, bypassing the ROM routine that handles these interrupts.
		Some hard drives might require that this setting be disabled in order for interrupts to be processed correctly.
		By default Windows sends an administrative alert when the amount of free space remaining on a hard disk drive falls below 10 percent.
	www.winguides.com /registry/category.php/50 (279 words)

	Disk Drive Depot - hard disk drives, tape drives, controllers... all your data storage needs (Site not responding. Last check: 2007-10-21)
		Disk Drive Depot - hard disk drives, tape drives, controllers...
		Whether you need a hard disk, a tape drive, or a SCSI ID switch, you can find it at the Disk Drive Depot.
		There you can order anything in their huge inventory over via phone or email.
	www.diskdepot.com (121 words)

	IBM TotalStorage: IBM Storage hard disk drive download and technical information page (Site not responding. Last check: 2007-10-21)
		Hitachi Global Storage Technologies provides downloads and technical information, including a drive fitness test and a disk manager, for Ultrastar, Deskstar, Travelstar, and Microdrives.
		If you are not sure whether or not your hard drive is supported by IBM, please contact technical support, call 1-800-IBM-SERV (U.S only) or learn more about hard disk drive support prerequisites.
		If your drive was not found in the quick search or hard disk drive list, then support information for your IBM branded hard disk drive may be provided by IBM at:
	www.pc.ibm.com /ww/hdd/hddredirect.html (133 words)

	PCGuide - Reference Guide - Hard Disk Drives (Site not responding. Last check: 2007-10-21)
		PCGuide - Reference Guide - Hard Disk Drives
		It seems that either your browser does not support frames, or you have them disabled.
		Please read the Site Guide before using this material.
	www.pcguide.com /ref/hdd (199 words)

	LaCie - External Storage: Hard Drives, CD-RW Drives, DVD-RW Drives, Tape, Monitors
		LaCie Introduces Big Disk Hi-Speed USB 2.0: Compact 1TB USB Hard Drive
		LaCie today introduces an affordable and easy-to-use Hi-Speed USB 2.0 hard drive: LaCie Big Disk Hi-Speed USB 2.0 packing up to 1TB into a sturdy aluminum d2 case.
		It’s a four-disk array with maximum capacities of 1TB (4x 250GB drives) or 2TB (4x 500GB drives) and throughput of 80MB/s via the fast SATA I host interface.
	www.lacie.com (218 words)

	James N. Porter home page
		the most widely used market studies on the worldwide disk drive industry from 1977 through 1999.
		In late 1999, DISK/TREND phased out its market research programs, but the 1999 reports, as well as older editions, are still available from Jim Porter.
		This site contains summaries and ordering information for 1999 DISK/TREND reports, plus extensive information on the data storage industry, including links to companies, government agencies, educational institutions and other organizations concerned with the disk drive industry.
	www.disktrend.com (118 words)

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