Boot sequencing for multi boot devices
US9733950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Mar 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4408
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-boot device capable of booting from a plurality of boot devices, each storing a boot image. The multi-boot device determines which boot device to load based on sequence numbers assigned to each of the boot devices. Some embodiments will make this determination using only hardware operations. The multi-boot device compares the sequence numbers of the available boot devices in order to determine the boot image to be loaded. The address of the selected boot image is then mapped to the device's default boot vector. The remaining images are likewise mapped to a secondary boot memory. The device then boots from the default boot vector. The user can change the boot device to be loaded by modifying one or more of the boot sequence numbers. The boot images can be updated without resetting the device by switching execution to and from boot images in the secondary boot memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.