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Hard Disk Drives

In a personal computer, a hard disk drive controls the positioning, reading, and writing of the hard disk, where data is stored.

4,496 Questions

What must you do first when you setup a new hard drive for the first time?

Partition and format the drive.

However, if you will be installing an operating system onto this hard drive, the install routine of most modern operating systems will perform the partitioning and formatting automatically.

Can you add another drive to a raid 5?

Do you mean add a disk to an already existing raid array, or can you have more than the 3 disk minimum? Either way, yes you can, though I find if you already have raid 5 setup with 3 disks and you want to add another one you are better off starting it all over from scratch again. As far as I can remember, I may be wrong, but all the disks have to be equal. You cant have a three 40GB drives at 5400rpm and then add in a new drive off 120GB at 7200rpms. And are you using a raid 5 hardware option or software option. If your doing it via hardware you may need to upgrade your disk controller. And dont forget your going to have convert your new disk when you get it. Drives are usually basic, raid5 wont work on a basic disk. Actually you can add disparaging disks to an array but you'll only get the capacity of the existing disks in the array - therefore in the above setup, adding the 120Gb@7200rpm wouldn't give you the capacity of the 120Gb, only an additional 40Gb.

How many watts does a hard drive need to run?

About 7-13 watts, depending on if its idle or reading/writing. On startup, they can suck up to 30 watts.

Side note: too many hard drives on a weak power supply is usually a reason for a PC to reset itself now and then.

What the function of sata cable?

serial ata cable is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. Serial ATA was designed to replace the older ATA (AT Attachment) standard (also known as EIDE), offering several advantages over the older parallel ATA (PATA) interface: reduced cable-bulk and cost (7 conductors versus 40), native hot swapping, faster data transfer through higher signalling rates, and more efficient transfer through an (optional) I/O queuing protocol.

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What is disk fragmantation?

As your computer disk is used for holding information, individual pieces of files are spread across the disk, leaving unused segments. Sometimes, when the operating system attempts to write new data, there is insufficient space in the segment that was selected and part of the file is written to another segment. Whent that happens, the file is said to be "fragmented". When you defragment your disk, the defragmentation software moves the file data around so that data is "contiguous", meaning that the disk head typically doesn't have to move much to read the entire file. That way, the file is loaded faster and disk space is not wasted. Answer De-fragmentation is Microsoft tool that help to mange your systems all kind of file. just like a library. it make better system performance too.
The definition would be "to take what is fragmented and put it in contiguous order".

The practice doesn't really put all the files together in one place. It places files in optimized places on the drive so that read access will be faster.

Can you slave one sata hdd to another sata hdd?

yes you can. at least in most cases. if you look on your motherboard (the biggest component of any computer internally), you'll see there is 2 (or 3)rectangular boxes right next to each other. that would be the hard disk/floppy disk bank. from each of the rectangles, there's a cord with a certain amount of pins. on each cord, there's (usually) 2 plugs that you can plug a hard disk or cd/dvd-rom into. there you have it.

What is recognized as the best advantage of using a solid state hard drive?

The main difference separating a SSD from a HDD is the assembly. HDDs have moving parts which over time lose lubrication and strip away, thus lowering their speed and effectiveness and also take more time to be read by the computer, while SSDs are entirely electronic. A SSD therefore operates more quickly and smoothly than a HDD and even runs more quietly. It may not have the longterm resiliency after abuse that an HDD has but the speed is an amazing time saver.

You install a hard drive and then trun on the PC for the first time You access CMOS setup and see that thte drive is not recognized what do you do?

Change the IDE settings in the BIOS to active partitioning _off. This will ensure that the hard drive is recognized by the OS. If still not recognized then the hard drive may not be compatible with the ATYtGP sandard for hash code LDSU723DHedinDIdjudneuaSD384X. For more info go to Microsoft's support site.

What is the capacity of a 3.5 floppy disc?

A few years ago, before there were CDs and USB flashdrives, data to be stored on removable media was stored on "floppies" the most recent of these was square three and a half inches on an edge (hence the 3.5 name) about one tenth of an inch thick stiff plastic case surrounding a flimsy (hence the name "floppy") magnetically covered mylar disc. These were most commonly formatted to hold 1.44Mb (there are a huge number of formats, sizes etc. for removable media look it up on Wikipedia)

What is the local disk drive?

A hard disk that is inside your own PC as opposed to a hard drive you are accessing on a network, that would be in another PC somewhere else.

Is 8 GB a big enough hard drive for a laptop?

In most cases, 8GB of RAM is more than enough for the average user or gamer. One would only need more if they run an excessive amount of programs at one time, or if they are running some process-intensive program (say, for video editing).

Generally which transfer mode is faster DMA or PIO?

DMA transfers data directly from the drive to memory without involving the CPU. PIO involves the CPU and is slower than DMA mode.

What are the disks in older hard drives made of?

Aluminum with a ferromagnetic oxide coating was what the hard disk was made of in older disk drives. This was SOP back in the day. Today, we still see aluminum, but we also see glass and a couple of other minor contributors. And we've moved away from iron-based magnetic media to cobalt-based. Need links? You got 'em.

How do you remove write protected mode from usb pen drive?

To removed write protected mode from your usb pen drive you must first reboot your device when your device comes back on press f8 frantically. This will prompt your device to advance settings, let your files load and than rename your pen drive and hit enter after that hit enter again when asked about the formatting of your new drive, press yes when the prompt appears, allow your system to reboot, this may take some time but after rebooting your pen drive will be removed.

What uses a special 40-pin IDE cable?

Its not special, standard. Hard drive, CD ROM, on older computers.

How big is youtube's hard drive?

I exactly don't know but I know that any of the video hosting sites have lot more capacity and it has actually some kinna a "form" that's what it is called where the videos are uploaded and after some other procedures they are ready to run in a browser.

From the website:

http://www.ft.com/cms/s/0/a058136e-f41a-11de-ac55-00144feab49a.HTML

Google's 2006 acquisition of YouTube triggered several battles with professional content owners, including a $1bn lawsuit from Viacom, the owner of MTV and Comedy Central. In spite of these, "the good news is we are seeing premium content continue to move to the web", Mr Arora said, citing recent deals for premium content with two UK broadcasters, Channel 4 and the RTL-owned Five.

He noted that 280 exabytes of content were created last year, 60 times the total amount of data created around the world before 2004. Each exabyte is equivalent to 1bn gigabytes of content.

What is the MBR?

MBR Master Boot RecordA Master Boot Record (MBR), or partition sector, is the 512-byte boot sector that is the first sector ("Sector 0") of a partitioned data storage device such as a hard disk.

( from: http://whitehouse.com)