The file system is central to the Unix system design from which Linux borrows. The mass storage requirements have traditionally been fulfilled through hard disk subsystems. However, as hosts become as small as credit cards, flash memory technology has replaced the bulky mechanical drive.
SD Card Media
The first Pi’s used a standard-sized SD card. All newer models, however, now use the MicroSD card shown in Figure 9-1, along with the standard SD adapter.
Figure 9-1
SD MicroSD adapter (left) and ...
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