Recovery of file systems after modification failure
US6205558A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1998 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Oct 7, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Prior to execution of a file system structure modification procedure (406) which can leave the file system structure in an invalid state, a copy is made of a boot record (110), and the boot record (110) is replaced by a recovery program (130). If the file system structure modification procedure (406) fails, leaving the file system structure in an invalid state, the recovery program (130) is automatically executed when the computer is rebooted (414). In one embodiment, the recovery program (130) completes the failed file system structure modification (406). In another embodiment, the recovery program (130) rolls the file system structure back to a valid state which predates the attempted file system structure modification (406). After restoring the file system structure to an intact state, the recovery program (130) uses the copy of the boot record (110) to restore the boot record (110) to its original state. This allows for the recovery of the file system structure without intervention by a user, and without loss of information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.