Hard Disk Drives

There are many uses for a portable hard drive, they include: backing up files, sharing storage between several devices, locking access to files by physically removing their connection to the network, organizing files, and additional storage space.

Incomplete question.

No. RAM is "volatile" memory which means when you turn off the computer it loses the information. a Hard Drive is the device that stores your documents and files and retains this information even when the power is turned off.

RAM is much faster than a hard drive and it used by the computer as temporary memory that it works to/from.

This usually occurs after formatting or putting a new hard drive into a system and needs to be fidisked. To do this get to a dos prompt usuing a bootable floppy, type in fdisk and partition the hard drive using the on screen options (create new partition)(fat32 for windows 95/98/me ntfs for nt/xp/2000)

A big city firefighter can make anayware between 35 thousand a year while on probation and in there fifth year make up to 70 thousand

basically a fireman can make $50,000 a year and they get a raise every year, so it adds up over time!

RAM is a primary storage medium, but it is volatile. Cache memories storage frequently accessible data.

Most external hard drives can be used as internal ones. Provided that the IDE, SATA, or SCSI interface of the external hard drive is the same as the desktop's system board hard drive interface. Users can remove the USB casing and proceed to plug the data and power cables into it. The external drive, just has an additional component, that's used to hook up with the USB port.

The most common "drives", or storage devices, on a computer are hard drives and optical (CD/DVD/Blu-Ray) drives. Floppies were originally quite common, but have not been included on any new computers. USB-attached drives are common, but arguably not used on a single computer very often.

Quote from a Google search: IDE (Integrated Drive Electronics) is a standard electronic interface used between a computer motherboard's data paths or bus and the computer's disk storage devices.

The current maximum size of an NTFS partition is 16 exabytes (18 billion gigabytes). Assuming you can divide up the drive into four primary partitions, you can have 64 exabytes on a hard drive. Of course, Windows still uses BIOS addressing to find the size of a hard drive, so it is still limited by what the BIOS can see. Currently, the newest BIOSes support a maximum of 144 petabytes (144 million gigabytes).

How fast can a SATA drive transfer data?

The differences between cable and wireless internet is that, when it is "cable" internet a physical cable is connected between the computer and the router. Whereas the "wireless" internet is wireless, it sends information through the air to your computer.

pause at each new heading to make sure your notes are complete.

In other words, is it correct to say that if you are talking about an external hard drive with a USB connector. you can use it for either a desktop or laptop? Yes but no at the same time... Both of the Hard drives work exactly the same but the destop Drive(3.5") is larger than the Laptop hard drive.(Ranges between 1" and 2.5")

go to start and click on control panel and go to add remove programs and choos the program. Search for " Reflective Riot " on youtube and view their video on how uninstall programs step by step, they will show you how to do it.

There are many types of CPU's..

3 types of CPUs are:

CISC: Complex Instruction Set Computers

RISC: Reduced instruction Set Computers

MISC: Minimal Instruction Set Computer

The hard drive stores all the programs and data on your computer. This is both things like word documents, pictures, movies, etc as well as executable files and program related to the program you run.

i am formatted tally 9 no backup are in system how to recover the tally 9 data's

For internal hard drives, the highest I've seen being sold were up to 15000 RPM.

Usually hard drives that come with computers pre-installed are at 7200 RPM so it's more than double that.

Generically "formatting" is the name of the process, which comprises low-level formatting, partitioning and high-level formatting.

It is the low-level formatting process/step that marks the surfaces of the disks with markers (sector markers) indicating the start of a recording block and this is usually done by the disk manufacturer.

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Formatting a disk (hard drive or floppy) is the process of taking a homogeneous magnetic surface, and dividing it into tracks, each track containing a number of sectors, which are the smallest possible usable portion of the disk.

The physical size of the tracks and track sectors has changed over the years and according to manufacturer, and needs to be designed such that the maximum amount of usable space is balanced against the drive head's ability to distinguish between individual sectors.

If too many sectors are jammed onto the disk surface, the drive head may take info from two or more adjacent sectors, causing a fatal error.

The amount of digital information that can fit in a sector depends on the operating system and manufacturer, with 512 bytes being standard for most floppies (which are now totally obsolete), and the more bytes you can squeeze into a sector, the higher the capacity of the disk. Improvements in drive technology has yielded 3.5 inch floppies that hold much more than 8 inch floppies of the 1970s & 80s, with 5.25 inch floppies being the standard size until around 1990.

Hard drives are generally sealed well (keeping a dust free environment) and manufactured to such tolerance that a fingerprint would cause a crash, allowing such high capacity that we see in mobile devices today. But the formatting concept is identical. Only the number of tracks, and the number of sectors per track is variable. All standard magnetic disks (hard or floppy) are readable and rewritable on both sides, and it is not uncommon for hard drives to stack the disks (known as platters) like pancakes, with a read/write head on each side of each platter. This further increases usable data storage space.

Unlike a phonographic record, the tracks do not spiral in. They are a series of concentric circles. The head jumps from track to track as it reads or writes. Track 0 is the outermost circle. Each track gets shorter as each successive "track circle" is closer to the inner edge, fewer sectors can occupy a particular track.

Magnetic media has been around since forever in the form of tape and cassettes ("8 Track" cassettes were linear tracks (as opposed to circular) that had 4 stereo tracks (4x2=8). Since they were analog as opposed to digital these tracks did not use sectors.

Hard drives were introduced in 1956 by IBM and floppies became commercially available in 1971. By 2010 very few motherboards were capable of interfacing with a floppy drive.

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The name of the process is called 'Formatting'. Before a hard disk manufactured from the factory can have data written to it, it must have something done to it called a 'Low Level Format' which prepares the disk for use in a computer. Blank hard disks sold today will already have this process done to them. Allow me to explain how Formatting works.

Formatting a disk (hard drive or floppy) is the process of taking a homogenous magnetic surface, and dividing it into tracks, each track containing a number of sectors, which are the smallest possible usable portion of the disk. The physical size of the tracks and track sectors has changed over the years and according to manufacturer, and needs to be designed such that the maximum amount of usable space is balanced against the drive head's ability to distinguish between individual sectors. If too many sectors are jammed onto the disk surface, the drive head may take info from two or more adjacent sectors, causing a fatal error. The amount of digital information that can fit in a sector depends on the operating system and manufacturer, with 512 bytes being standard for most floppies (which are now totally obsolete), and the more bytes you can squeeze into a sector, the higher the capacity of the disk.

Improvements in drive technology has yielded 3.5 inch floppies that hold much more than 8 inch floppies of the 1970s & 80s, with 5.25 inch floppies being the standard size until around 1990.

Hard drives are generally sealed well (keeping a dust free environment) and manufactured to such tolerance that a fingerprint would cause a crash, allowing such high capacity that we see in mobile devices today. But the formatting concept is identical. Only the number of tracks, and the number of sectors per track is variable.

All standard magnetic disks (hard or floppy) are readable and rewritable on both sides, and it is not uncommon for hard drives to stack the disks (known as platters) like pancakes, with a read/write head on each side of each platter. This further increases usable data storage space. Unlike a phonographic record, the tracks do not spiral in. They are a series of concentric circles. The head jumps from track to track as it reads or writes. Track 0 is the outermost circle. Each track gets shorter as each successive "track circle" is closer to the inner edge, fewer sectors can occupy a particular track.

Magnetic media has been around since forever in the form of tape and cassettes ("8 Track" cassettes were linear tracks (as opposed to circular) that had 4 stereo tracks (4x2=8). Since they were analog as opposed to digital these tracks did not use sectors. Hard drives were introduced in 1956 by IBM and floppies became commercially available in 1971. By 2010 very few motherboards were capable of interfacing with a floppy drive, except for external 3.5 inch drives via USB connection.

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Backing up a drive is a great way to ensure your data is preserved in case of hard drive failure or accidental deletion. Here are the steps to back up a drive:

• Connect the drive to your computer. This can be done through a USB port or over a network.
• Download and install any necessary backup software. This will allow you to easily select which files you want to back up.
• Select the type of backup you want to perform. This can include full drive backups or individual file backups.
• Select the destination for your backup. This could be an external hard drive an online storage service or a secondary computer.
• Start the backup process. Depending on the size of your drive this could take several hours.
• Verify that the backup was successful. You should be able to open the files from the backup to confirm that they are intact.

Following these steps will help you back up your drive quickly and easily. By taking the time to back up your drive you can rest assured that your files are safe and secure.

Data format refers to the way the data is put together. Pictures, or more technically images, are stored in various formats such as bmp, jpg, gif and png. these letters are placed after a dot (called a period in America) and are called the filename extension. So in the case of example.bmp this refers to a file called example stored in bmp (bitmap) format, gif is a slimline format taking less storage space and hence holding less detail than bmp.

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It has multiple connotations. If you actually know what PXE is and were planning to use it, it simply means that something is wrong with the network cable, or the router is not turned on.

If you have absolutely no idea what PXE is or why you would want it and just want to know why your computer doesn't start up, it means that either your hard drive has been formatted or died, or that "LAN" was set up as the first boot device in the BIOS. If the BIOS detects that there is no hard drive or it isn't bootable, it will continue through the list of boot devices, including the network. PXE is basically the ability to boot an operating system that is stored on another computer over the network. It is very useful for businesses and power users, but most consumers will never actually use it.

BIOS is checked out when computer is switched on and reports configuration, if set as 1st boot device hard drive at Bios boots here, if Bios is set to another device it boots there, 1st boot sequence is your 1st boot choice, if hard drive is the choice initialization activates a mechanical arm where mounted on its end is a head configuration comprising of magnetic small boxlike shapes the arm and its associated parts directionalises its self over to the outside cylinders on the platter/plate associated with the disc in the hard drive and attempts to read a ring of coded data and locates sector 1 and an area of data where reading executes from MBR (MASTER BOOT RECORD) and tells computer what PARTITION to boot in this case it is drive "C". Since "C" is active partition on after the scan boot reports on 2 "FILE ALLOCATION TABLES" known as FAT and provides size, here is the record recordings of files on hard disc, after reading the 1st FAT, 2nd FAT contains "ROOT DIRECTORY" where 2 hidden system files are located and a "KEY FILE" called "COMMAND.COM" boot process initializes windows start. PARTITIONING can in hard drive takes on other assigned letters "D" "E" "F" ETC. Where no partitioning has occurred next hardware device CD-ROM IS assigned the letter "D", and this can be your 1st BOOT device rather than hard drive, it's optional. A VIRUS can replace MBR with themselves and replace MBR somewhere else.