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US 7,412,562 B2Granted
Using non-volatile memories for disk caching of partition table entries
AssigneeIntel Corporation
InventorJohn I. Garney
Life of this patent
Estimating the term…
Abstract
A disk cache may include a volatile memory such as a dynamic random access memory and a nonvolatile memory such as a polymer memory. When a cache line needs to be allocated on a write, the polymer memory may be allocated and when a cache line needs to be allocated on a read, the volatile memory may be allocated.
Claims8
A method comprising:
- saving a partition table entry from a disk to a disk cache in a first system;
- scrambling the entry on the disk in such a way that if the disk is removed from a first system and used in a second system without the cache the entry cannot be accessed, but when the disk is returned to the first system the entry can be accessed;
- restoring said entry to the disk from the cache;
- and
- determining whether disk caching is disabled and, if so, restoring said entry to the disk.
2 more elements
An article comprising a computer readable medium storing instructions that enable a first processor-based system to:
- save a partition table entry from a disk to a disk cache;
- scramble the entry on the disk in such a way that if the disk is removed from the first system and used in a second system without the cache the entry cannot be accessed, but when the disk is returned to the first system the entry can be accessed;
- restore said entry to the disk from the cache;
- and
- determine whether disk caching is disabled and, if so, to restore said entry to said disk.
2 more elements
A system comprising:
- a processor;
- a disk cache coupled to said processor;
- a storage coupled to said processor storing instructions that enable the system to save a partition table entry from a disk to the disk cache and scramble the entry on the disk in such a way that if the disk is removed from the system and used in a second system without the cache the entry cannot be accessed, but when the disk is returned to the system the entry can be accessed, said storage to restore said entry to the disk from the cache, and wherein said storage stores instructions to determine whether disk caching is disabled and, if so, to restore said entry to said disk;
- and
- a wireless interface.
2 more elements
Dependencies are inferred from the claim text.