The custom ramdisk files are sent over the USB connection and loaded into the phone's RAM.
For most users, a ramdisk is a "last-resort" tool for devices that are otherwise inaccessible, requiring a high level of technical proficiency and an understanding of the specific iOS version's vulnerabilities. iphone xr ramdisk
: It acts as a temporary operating system loaded entirely into the device's 3GB of RAM. It allows technical users to access the internal filesystem without loading the standard iOS security restrictions. Common Uses : The custom ramdisk files are sent over the