A is a small, temporary file system loaded into a computer’s system memory (RAM) during the early stages of the startup process. It acts as a bridge between the initial hardware power-on and the full loading of the operating system. Because it operates entirely within the RAM, it provides near-instantaneous access to critical drivers and initialization scripts, making it indispensable for modern Linux-based systems, including Android. How a Boot Ramdisk Works
The kernel itself can only directly mount a root file system if it has built-in drivers for the underlying storage hardware and file system. However, monolithic kernels with every possible driver are bloated and inflexible. Instead, modern kernels use . boot ramdisk
Developing a system to boot this way requires accepting a fundamental trade-off. A is a small, temporary file system loaded
:
To provide access to the root file system, which might be on a disk that requires special drivers to access, such as SCSI, iSCSI, or encrypted disks. How a Boot Ramdisk Works The kernel itself