Resuming operation from the on-state idle mode or the suspend state does not alter the memory of an H/PC or change application settings. In contrast, rebooting or resetting an H/PC does alter memory and affect application operation. The following table shows the differences between these transitions.
Transition |
Description |
| Wake up or resume | Transitions from the suspend state to the on-state full-speed mode. Wake up does not change memory or application settings. |
| Cold boot or cold reset | Resets an H/PC. All applications are terminated, the working memory is cleared, and the object store is cleared. |
| Power-on reset | Transitions from a dead state to an on state. Power-on reset has the same consequences as a cold boot. |
| Warm boot or warm reset | Terminates all applications and clears working memory. The integrity of the object store is maintained. |
A cold boot or power-on reset transition occurs when power is first applied to an H/PC or when all power is removed from an H/PC and then reapplied after one minute. Unless an H/PC uses nonvolatile memory, a user will have to load or reload applications after a power-on reset. Object store data is lost after a cold boot.
A warm boot occurs when the user presses the reset button on an H/PC. This button is placed in a pin-hole recess or under the battery cover to protect it from accidental activation. Users perform a warm boot only when the H/PC has stopped responding or has become unstable. A warm boot stops applications that are running and clears the memory used to execute applications. Memory used by the object store and file system is preserved.