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sábado, 2 de maio de 2015

terça-feira, 21 de abril de 2015

Disk Devices and Partitions

A hard disk consists of a set of stacked platters, each of which has data stored electromagnetically in concentric circles, or tracks. Each platter has two heads, one on each side of the platter, that reads or writes data as the disk spins. A hard disk drive controls the positioning, reading, and writing of the hard disk. Note that the heads of all platters are positioned as a unit.
The smallest addressable unit of a track is a sector. A cylinder is defined as the set of tracks that appear in the same location on each platter. For example, the following diagram shows a hard disk with four platters. Cylinder X consists of eight tracks (track X from each side of each platter).
Hard disk, including tracks, sectors, and platters
A hard disk can contain one or more logical regions called partitions. Partitions are created when the user formats a hard disk as a basic disk. Windows also supports dynamic disks, which are not discussed in this topic. For more information about basic disks and dynamic disks, see Basic and Dynamic Disks.
The creation of multiple partitions on a disk allows the appearance of having separate hard drives. For example, a system with one hard disk that has one partition contains a single volume, designated by the system as drive C. A system with a hard disk with two partitions typically contains drives C and D. Having multiple partitions on a hard disk can make it easier to manage the system, for example to organize files or to support multiple users.
The first physical sector on a basic disk contains a data structure known as the Master Boot Record (MBR). The MBR contains the following:
  • A boot program (up to 442 bytes in size)
  • A disk signature (a unique 4-byte number)
  • A partition table (up to four entries)
  • An end-of-MBR marker (always 0x55AA)

Related topics

About Volume Management
Basic and Dynamic Disks
Comment:
I have experienced that converting dynamic disks for periodical use in a single disk can corrupt files and danify sectors in someway somehow use, I didn't see it has freely asset to transpose as basic do it assort independently.

Looking for a backup disk, I've bough a dynamic disk without the companion to convert it, but being sealed as dynamic disk as generic basic.

I cannot convert it if I do not buy a third part program to do it, but it do not explain about the logical meaning if a Dynamic disk can be a Physical Dynamic disk to not be converted. But being a new one and I'm a old set in this environment, what to spect?

No Information is related. Convert it in a demo is something really corruptable in now days.

sábado, 4 de abril de 2015

...and then there were three...

http://pt.wikipedia.org/wiki/...And_Then_There_Were_Three...

terça-feira, 31 de março de 2015

Tech Stuff - Monitors/Displays: Resolution/Bandwidth/Refresh Rates

http://www.zytrax.com/tech/pc/resolution.html

Tracked on

http://en.wikipedia.org/wiki/VRAM
http://en.wikipedia.org/wiki/Memory_bandwidth

Tech Power Up discussion assigned to VRAM:
http://www.techpowerup.com/forums/threads/explain-to-me-how-memory-width-128-192-256-bit-etc-is-related-to-memory-amount.170588/

What I'm trying to understand that is sometimes that refresh rate in bandwidth for the bit rate in the memory will affect the image resolution in the bit rate the memory access for the "shader" refreshing. What could be the best bit rate to assist the right refresh rate in definition for a low level, medium level, or high leveled refreshed monitor.

Sometimes it just can displace the "texteled" resolution by the wrong technology used for the video accessing memory in refresh rate. But it will mean 192 in bit rate for a "medium level" in options to effect? I don't know... - More is something which tries the "shader" more defined in strong definition for the final result but that can be also emulated by other transitions, but I can't say at all at the same result by reading the access memory in strong definition for the memory type. But the refresh rate "still tries" something else in large bit rates.

This Thread is one year old, but still funny, and the topic seems to not have a concluded subject.


Article: Just How Important is GPU Memory Bandwidth?

http://www.techpowerup.com/forums/threads/article-just-how-important-is-gpu-memory-bandwidth.209053/

segunda-feira, 16 de março de 2015

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