WEBVTT

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Flash storage media.

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Flash memory is so named because the data is written to and erased from using electrical charges.

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You may have perhaps heard someone say that they had to flash their mobile device.

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This is quite similar to erasing flash storage media on smartphones and smart devices, except devices

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with operating systems such as Android and iOS require a much more extensive procedure for flashing

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and reinstalling their operating systems.

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The end result, however, is very much the same in that the memory and storage areas are reset or wiped.

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Flash storage chips come in two types known as Nand and nor flash memory and are responsible for high

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speed and high capacity storage of data on flash storage media.

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They are newer types of electrically erasable programmable read only memory.

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Eeprom.

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Chips and instead can wipe blocks of data or the entire drive rather than just one bite at a time.

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As with the slower eeprom.

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This type of flash memory chip is non-volatile, meaning the data is still stored on the chip, even

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after power to the chip is lost.

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Data is erased when specific instructions are sent to the chip in the form of electrical signals via

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a method known as In-circuit writing which alters the data accordingly.

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A flash drive with the Nand chip exposed.

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Flash media storage has so far become the ultimate in portability, with many types ranging from the

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size of your thumb to the size of the nail on your little finger.

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The lifespan of flash storage all depends on the usage as they all have an average read write usage,

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sometimes displayed on the packaging of the device.

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The read write speeds are also some of the fastest at this point, which is why hard disk drives have

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moved away from the traditional mechanical disk mechanism to a solid state one.

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SSDs will be discussed further later in this lectures.

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Important note with flash storage media capacities ranging from 2GB to 256GB, particularly on SD,

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Micro SD and flash drives.

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These can now act as very fast removable drives with operating systems installed on them and can even

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be partitioned using various tools.

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Yes, indeed.

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Kali Linux most certainly can be installed onto a flash drive SD or micro SD card and be made bootable

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with as little as eight gigabytes of storage space.