Contents
What are the files in the directory dev?
The /dev directory contains the special device files for all the devices. The device files are created during installation, and later with the /dev/MAKEDEV script. The /dev/MAKEDEV.
Which are the two type of device file?
There are two general kinds of device files in Unix-like operating systems, known as character special files and block special files. The difference between them lies in how much data is read and written by the operating system and hardware.
What is Dev block?
The device /dev/block/mtdblock2. is a special type of memory storage on your android that can be read and written. In this case it looks like it has been formatted with the “yaffs2” file system, a type of file system that works particularly well with that type of memory storage technology.
What does mount SYSTEM do in Android recovery?
mount option im recovery mode allows you to mount a partition , like SYSTEM or DATA etc. Like you would do with a computer drive. This allows you to modify anything in that partition. Because when you boot in recovery mode, the other partitions are not mounted, you cannot see data or edit them.
What kind of files are in the / dev directory?
The /dev directory contains some very interesting device files that are portals to hardware that one does not normally think of as a device like a hard drive or display.
Why is / Dev / sr0 the name of a device in Linux?
This can occur for historical reasons: a device file was moved from one name to another, but some applications still use the old name. For example, /dev/scd0 is a symbolic link to /dev/sr0 under Linux; both designate the first CD device.
How are block devices like fixed size files?
Block devices are things like disks, which behave like large, fixed-size files: if you write a byte at a certain offset, and later read from the device at that offset, you get that byte back.
What makes a device file under / Dev?
Almost all the files under /dev are device files. Whereas reading and writing to a regular file stores data on a disk or other filesystem, accessing a device file communicates with a driver in the kernel, which generally in turn communicates with a piece of hardware (a hardware device, hence the name).