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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

Can you use an external hard drive to add more memory to your DVR if there is a USB port available?

DISH NETWORK AND DIRECTV are working on that option for their DVRs. DISH NETWORK's option allows the use of a standard external USB drive, but it formats in a propietary format so it cannot be moved from one DVR to another. Thank you RIAA and MPAA for that wonderful option!

DISH NETWORK currently has a series of DISHPlayers that video can be downloaded through the USB port on the DVR to the DISHPlayer personal video player

Why 500 GB hard drive space less to 465.75 GB in your computer?

There are multiple legal ways of defining bytes, kilobytes, megabytes, gigabytes, terabytes, etc.

A standard kilobyte (KB) is defined as 1024 bytes. But drive manufacturers use the more 'lean' definition of kilobyte, which is a very strict 1000 bytes, as opposed to 1024 bytes.

After all, if you buy a 500Gb drive, and it actually had say 525Gb's on it, you'd be happy, not confused!

But no, they chose to go the opposite route, which, just my 'mere coincidence', happens to allow them to legally market undersized drives as judged by the standard definition of a KB.

IMO, it's all about the money, as it always is.

At this point in time, drives are essentially available in 500GB chunks. If you're uncertain as to whether one size will be enough, then you simply bump it up to the next notch and you're more than covered.

The other thing the article mentions is that formating a drive also reduces it's available storage space, so even if manufacturers used a 1024KB, you'd might still see a reduced available size because of the formating.

How to save to an external portable hard drive?

When its hooked up and operating properly, your external hard drive should show up as a drive letter under "my computer" just like your internal drive. You can save to it just as you would an internal drive.

If the drive is not showing up as i just described, it may not be partitioned and formatted. You can investigate this by going into control panel > administrative tools > computer management and clicking on disk management in the left pane. Once you've done this, the lower-right pane will show all your hard disks, scroll through and, if you find your external hard disk in there listed as "unallocated" you can partition and format it by right-clicking on it and choosing the appropriate dialog options.

NOTE: be very careful when messing around with disk management, one of the disks in that list will be your primary hard disk and erasing THAT will destroy your operating system. Be sure you are formatting the right disk.

What is the difference between a floppy disk and a floppy drive?

In some ways, they are kind-of the same. But there are significant differences. Consider that data organization on a computer has been fashioned after what you might find in an office:

An office may have a bunch of related papers. In a computer file system, those papers would be individually identified as files.

The papers are stored in a folder. On a computer, files are stored in a folder, or, directory.

The office folder is stored, along with other related folders, in a drawer of a filing cabinet. In a computer, a drive is analogous to the drawer of the office filing cabinet. The drive, usually identified by a unique letter of the English alphabet, is a volume, or partition. Files and folders in the "folder" of the drive itself are said to be in the root folder.

The office filing cabinet may have multiple drawers. Together, the drawers form a filing cabinet. In a computer, a drive may be one of several volumes (partitions) available on a physical disk. So, the disk itself may be thought of as the filing cabinet.

A drive and a folder on a computer have these things in common:

  • Both can store other folders within.
  • Both can store files within.
  • Both can only be one type of file system.
  • Both can have a recorded date of creation.

A drive and a computer folder have these differences:

  • The drive is the top-level entity of a disk volume. A folder always has a parent folder, but a drive does not.
  • Drives are usually identified by a single letter of the English alphabet. A folder can have most any name, according to the conventions of the file system.
  • Folders can have file attributes (like Read-Only, Hidden, Modified Date, etc.) that a drive itself cannot have.
  • A drive can have a volume label that identifies the volume. The volume label does not need to be unique. Some drives can also have additional properties, like a quasi-original serial number.
  • A drive's letter must be unique in the system to which it's attached (mounted). A folder must have a unique name in the folder it's in, but there can be any number of identically-named folders in other folders.
  • A folder (or file) cannot exist without a drive, but the reverse is not true.
  • As a drive represents a complete volume (partition), the file system's organization of data relies on it. The entire structure of all files and folders on a drive is stored internally as a part of the drive's data. Formatting a drive initializes this data structure, destroying it if it already exists. You cannot format a folder.
  • The "folder" representing a drive is called the root folder (of the drive). No regular folder can be addressed as such. The root folder cannot be deleted, but all of the files and folders in the root folder can be deleted.
  • A drive can be released from the system it's attached to, which is called dismounting it. A folder cannot be dismounted, only deleted.
  • Some file systems allow mounting a drive as a sub-folder of another drive. In this case, the mounted drive's root folder logically becomes the sub-folder of the other drive. But in reality, the two volumes remain physically separate. One of the volumes can be destroyed or corrupted without affecting the other. The volume that's mounted can still be addressed separately by a unique drive letter.
  • A host system may require a special device driver in order to access a drive. A folder is a figment of the drive's file system, and requires no drivers.

What is a memory module?

Memory modules are used for adding RAM to a computer motherboard. As a standard computer industry practice the motherboard manufacturers do not add RAM to motherboards but provide slots (empty sockets) to which memory modules can be added as per computer configuration needs of the end user. Semiconductor RAM which is manufactured as standard chips is assembled on printed circuit boards as memory modules of different capacities (e.g 512MB , 1GB or 2GB). Examples include SIMM, DIMM, SODIMM. These module printed circuit board size, shape and signals are standard as defined for various memory types e.g. 200pin laptop DDR2 SODIMM is a common laptop memory type these days. Since there are standard modules for all type of computers, for a specific computer type you can just buy memory module and add RAM to the computer.

How to protect a floppy disk?

To write-protect (stop deletion, overwriting, or adding to) a 3 1/4" floppy disk, slide the tiny plastic tab at the back of the disk (opposite the shutter), so that it is open.

To protect a disk from damage, keep it in a dry, temperature-controlled environment free of dust and smoke. Avoid any contact with strong magnetic field (sudh as on top of stereo speakers).

Does an external hard drive increase disc space?

You can use compression, but it can also affect the performance of the disk.

What error messages can indicate that BIOS could not find a hard drive?

BIOS will notify that it couldn't locate a bootable drive. But you can get other related messages as well.

What is a major difference between a desktop and a laptop?

Desktops have expansion ports (PCI ports) where you can add new cards such as sound cards or network cards. Laptops often only have a single bay for this purpose.

Desktops tend to have better performance because they don't have to run on batteries. That means the processors and video card can be designed to use more power and can take up more space. Hard drives are similarly faster and have higher capacity (in general).

In general, its is much cheaper to build a high performance desktop PC than it is to build a high performance laptop due to the power, size, and heat constraints that a laptop has.

What is the purpose of a DVD hard drive?

To hold the operating system files, operating system, save data, all the information in your computer will be saved on the hard drive.

The hard drive keeps all the data even when there is no power. It will stay forever until changed or removed by the computer.

Hard drives use a spinning magnetic disc and magnetically recorded and read from, using a swinging arm with a minute read/write head on it.

Called a hard drive to distinguish it from early magnetic discs, which were made of plastic film and called 'Floppy discs', because they were floppy (but held inside a rigid platic cover.)

Thats why you need to destroy your hard disk drive before disposal of your computer. Make sure the disposal is in a special place for electric stuff.

The data will survive, even when the hard drive is removed. It can be plugged into another computer and read.

How much is a new hard drive for a computer?

As a rule of thumb, I'd deduct at least 50% depreciation per year. It's actual worth is dependent upon how old it is, what condition it is in, and how many hours it has actually been in use. Hard-drive manufacturers typically provide an MTTF (mean time to failure) expressed in hours. This is the average number of hours of continual use you can expect to get from a hard-drive before it is expected to fail. It is not an exact science, it is merely a guide figure, however, the closer a drive gets to its MTTF the less worth it has. Personally, I treat all second-hand drives with suspicion as it's hard to tell its true condition just by looking at it. You need to install it, inspect the SMART (self-monitoring and reporting tool) information, possibly reconfigure its geometry and soak test it for a week or two before deciding if its really fit for purpose. Even then, there's no guarantee it won't fail the moment you pay for it. At least if its an out-of-box failure you can get it replaced. You just don't get that sort of guarantee with a second-hand drive.

Which is faster serial interface or parallel interface?

It depends on the serial bit rate versus the parallel strobe cycle time but, in general, a parallel interface is faster than a serial interface. However, modern USB, Firewire, and SATA interfaces are very fast, and might be considered faster.

What is the name of the connector that is used to supply power to a hard drive?

There's different types of connections that lead to a hard disk. you'll have to ellaborate your question.

But..... I can tell you what the wires are....

  • There's the ribbon cable. (flat and wide cable that connects to the back of your drive to the motherboard)
  • The Molex plug (white and it has four pins) that powers your hard disks, it leads to the power supply.
  • OR... The SATA power connector (which is black, has 5 wires (red, yellow, 2 black, and one orange) which connect to the back of your hard disk
  • There's also the SATA data transfer cable, it's a thin (usually red) cable that connects to the motherboard to your hard drive. (it's a thin "L" shaped slot)

What is the maximum hard drive size for an Intel Pentium III computer?

The BIOS of virtually all Pentium III computers is limited to 128 GiBs (a 137 GB hard drive). While you can put any size hard drive you like in the system, Windows will only be able to see 128 GiB of it. Linux should be able to address all of it, as it does not use the BIOS to access the hard drive.

You can bypass this limitation by installing a new IDE / PATA controller in an available PCI slot. Although this will increase the time it takes to boot the system slightly, it will allow you to use all available hard drive space in Windows XP (SP1 and later) and Windows 2000 (SP4).

Who were the druids?

Druids were members of the priestly and learned classes of Western Europe, Britain and Ireland. They combined the duties of priest, scholar and teacher.

The "civilization" also had warriors, who, at times of war, would use body paints. I do not know why they did this though but if you do please feel free to delete this.

What does the disk fragmentation?

If a disk is fragmented, this means that the files in your computer are spread out all over the disk taking up too much space. This can be corrected by defragmentation which consolidate all the data.

Where can one purchase an eSATA external hard drive enclosure?

You can purchase an online hard disk enclosure from the shopping website known as newegg. Alternatively you may find a better price on the amazon shopping website or from the ebay bidding website

What is the C Drive do on computers?

That depends on how many drives or virtual drives you have on your computer. Mainly the C: drive has Windows on it, if you only have a C: drive all your information and programs go here, but if you have multiple drives C: drive should be mainly for your Windows operating system.

How does Hard disk communicate with motherboard?

The hard drive disk (HDD) is connected to the motherboard as with all the other components in the computer. If the computer needs to save data onto the HDD than the user input will be processed through the motherboard via the CPU (processor) and transferred into the HDD. If data is needed from the HDD once again the request will be sent through the MB via the CPU to the HDD where it will then be put back through the MB to go into the network via the network cards or USB via USB Interfaces or virtually anywhere else it is required to go.

What is hard disk and floppy?

These days (2012) you will not find many floppy disks (although just a couple of years ago we had to order special floppy drives for a server because some software would only be installed if it booted from Drive: A a floppy).

There were 8 inch and 5 inch and 31/2 inch floppy disks which were common.

The latest (diskettes) were the smallest and were protected by a hard plastic casing. Inside a thin Mylar disk coated with a magnetic surface stored the 1.44 Mb that was the capacity of most diskettes.

Hard disks have one or more aluminium or glass disks coated with magnetic surfaces. These hold much more information and now (2012) there are units that can store 3Tb or more.