User's Manual

Read Only rmware veries the integrity of Read/Write (R/W) rmware. R/W rmware veries the active Linux kernel. During run time,

the kernel veries each block read from disk.

If a verication step fails and there is no backup option, the machine enters recovery mode.

The Developer Mode switch turns o veried boot (at the Kernel stage) to enable users to run Chromium OS (or other OS). The BIOS is

always veried.

Disk Partition Map

There are two copies of Chrome OS on disk: an active copy and a backup copy. Each copy consists of a kernel partition and a root le

system. The backup copy is updated automatically in the background. Users only need to reboot. The partition contains encrypted user

data and is also used in the factory for storing test software.

Software