Shrinking virtual hard disk image
US10331349B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Oct 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2206/1004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure introduces a method and an apparatus of shrinking virtual hard disk image file. The present techniques search a garbage data block in a file and revise a record of the garbage data block in a block allocation table (BAT). The file includes one or more data blocks and a BAT that records information of each data block. The garbage data block is a data block that does not store effective data. The present techniques move an effective data block subsequent to the garbage data block, revise a record of the effective data block in the BAT after the moving, and shrink a size of the file after the movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.