Hard Disk Drives

read only memory

It places the drive head in a position that is least likely to cause damage to the drive if it is removed or moved physically.

Two really good data storage solutions are external hard drives and USB memory sticks. I have used both for different reasons. Large amounts a data would need an external hard drive and smaller amounts such as 2-3 movies a USB stick would be appropriate.

Currently, commercial computers (sold at hardware stores to normal customers) mostly contain hard disk that have a capacity around 500 gb, for desktops, and 120gb for notebooks. The 500gb could sometimes even be 1TB for desktops

IMPROVED:

As of this response (7/21/2010) the largest HDDs in production are 1.5 TB for 3.5" and 4.5 TB for external/array packages. However technology is in prototype with up to 4.5 TB 3.5" available relatively soon (within a couple years).

The largest memory modules in commercial production are 16 GB DDR2 sticks, though only 4GB sticks are common for end-users.

The largest SSDs available are currently around the 500 GB mark, and rediculously expensive.

The largest EEPROMs are 64 MB single-chip

The largest SRAM caches are 8 MB single-chip

The highest commercial density storage is Blu-Ray with 25 GB per layer (50 GB dual-layer), but with HVDs and PSDs on the way.

The largest tape drive is an astounding 12 TB 14.5" tape from IBM

The largest Flash single-chip module is 512 MB (of course much bigger can be made combining chips, as almost all flash devices do)

Largest SD card is 64 GB

Largest single-CPU cache combination structure is 12,928 KB

Largest CPU register bank is 4096 bits

Largest HDD buffer is 32 MB

Largest sequential tape memory is 1 GB

Largest video card is 8 GB

And that's all I know for the moment. (Whew, that took some research!)

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RAM (Random Access Memory) and SRAM (Static Random Access Memory) are the most commonly used types of memory used to hold instructions. RAM is the familiar chips you see people use to upgrade memory on the machine. SRAM is normally integrated and very expensive but much faster than normal RAM because it communicates directly with the processor.

If you're unable to open the drive, use a small paper clip to insert it in a very small hole in the front panel of the CD-ROM drive. Use a small paperclip and insert it in the hole. You will feel a sprocket type of wheel. Once you feel that you can push the wheel, do so, the tray will open slightly. You can then pull out the tray entirely using your fingers. If the drive was working properly and is no longer reading, most likely the drive is bad or corruption of the CD-ROM drivers. To eliminate the damaged drive, go to Driverguide, find the drivers for CD-Rom's and reinstall them, you may already have the divers on a CD which came with the computer. There's no charge for signing up. If that doesn't work, you can swap another CD-ROM from an older computer or purchase one at a local computer parts store. "Best Buy" stores usually has very good prices or try EBay. It's very simple to exchange. Open the case, look for the 4 small screws, 2 on each side of the case. Make sure you have the settings correct on the CD-ROM drive. Look at the back of the drive once you pull it out. You'll see 3 settings marked as CS, MA or SL. MA is Master drive, SL is the Slave drive, CS is sometimes used a s Auto, however, it is best to move the "Jumper" ( a very small 2 pin connector, usually black in color, sometimes it varies) it looks like a small square that connects 2 pins. Place this jumper in the same position as the former CD drive. Make sure that the IDE connector cable, Grey in color, is connected the same way. The grey cable has a RED line on one side, meaning PIN#1 which is the pin closest to the power supply cable. Note-make sure the power supply cable is also attached to the 4 pin connector. This may also be your problem if you recently removed or made changes to the cables or jumpers. The RED side of the grey cable needs to be the side which goes into pin#1. If you have 2 devices both connected as Master or Slave, your drives will not function. 1 drive must be Master, the other Slave. Both devices must also be aligned with the RED line on the grey cable connected to PIN#1 on both devices.

Answer-- Microsoft Windows XP

1. Click Start, and then click Control Panel.

2. Click System and Maintenance, and then click System,

3. On the Hardware tab, click Device Manager. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

4. In Device Manager, expand DVD/CD-ROM drives, right-click the CD and DVD devices, and then click Uninstall.

5. When you are prompted to confirm that you want to remove the device, click OK.

6. Restart the computer.

After the computer restarts, the drivers will be automatically installed.

See if reinstalling the drivers fixed the problem.

they are both storage devices. both have data that can be read and used during the operating of the computer.

Logic bomb

RAM

CACHE

REgisters of processors

the right place on the hard disk has to be found, then the read/write head must be placed there, then the sector (a small part of the hard disk) is read or written, if it's read, the data is moved into the memory, maybe by the DMA (Direct Memory Access) Controller. Is it's a write operation, the data must first be given to the Hard Disc Controller.

You Normally cannot unless you dsing a microprocessor unit similare to older palm computer with Usb Pen Drive Adapter and TV Tuner CArd ... Then transfer image of Pen Drive to TV Screen Via Tuner Card on Micro Palm Computer Adapter ?

Or Just Link you PC to your TV then Us RF Adapter To to as follows :

Pen Card { Possibly USB}

Connect to Computer

Computer Has Add-in TV Tunner / High End Video input/output Card Either Pci, PCI-E v1.X tr 3.X. then out Put HDMI Plugin on rear of PC to input of TV input Remodulateion unit eith Rf Switch Converter / HDMI Switch Conerter with input Antena Line Coaxile and Output Coaxile line to send ectra to TV..

A hard drive is non-volatile storage, since it retains all of the data written to it even when it is no longer supplied with power. In general, a computer's internal operating memory is volatile, while its data storage is non-volatile.

The storage capacity of a pen depends on its rating. They come in 4 gigabyte up to 64 gigabyte sizes.

The disk defragmenter reorganizes files and makes the data access fast. This helps keep crucial functions like startup and shutdown fast and smooth as well as prevents performance slowdowns.

No. A bigger hard disk drive does not usually mean a faster computer. It only means that your computer can hold more data before it crashes. The speed of your central processing unit sometimes called your chip mainly determines the speed of your computer. While other factors enter in, it remains the main reason.

Most computer hard-drives are labelled C:

The recovery partition is usually labelled D:

The internal CD or DVD drive is usually labelled E: and

Removeable storage usually gets the label F:

At least - that's how the drives on my laptop are labelled !

When a hard disk is said to have "crashed" it means that the read/write head has come in contact with the magnetic medium. The read/write head is SUPPOSED to "fly" above the surface, never actually touching down.

The disk turns at such a high speed that if the head touches down it destroys the surface resulting in what is affectionately called a "head crash" or a "disk crash".

A computer virus cannot cause that kind of hardware failure.

About 5% to 10% is the guideline. Windows needs a minimum of 15% free space to defrag. But Diskeeper defrags with as less as 5% free space efficiently.

Probably the best answer is "give it to the IT department and let them deal with it."

Any drive to be discarded which might contain sensitive financial (or other) information should be multiply-erased if possible, and destroyed if not.

some flash drives are recognized by the system as if they were actual hard drives. when the machine boots from usb the system will say, no OS found. please insert bootable media and restart. -romeo t

A few things to check:

1. Does the motherboard / BIOS detect the hard drive?

2. Is it formatted? The Linux installer should be able to see it, but it will be unable to mount it or use it.

3. If it is formatted, have you tried using it? Mounting file systems involves a command like:

mount /dev/sdc3 /media/disk-2

You will need to create a folder called "disk-2" at /media in order to mount it there.

4. If you are using a SATA drive, does your distro support them? Older distros, such as ones from before 2004, and Damn Small Linux, will not support these properly.

There are a few places you can purchase a 2TB hard drive for your HP laptop. For convenience you can buy it from Amazon, but you will have to wait a few days for delivery