Invention Grant
- Patent Title: Write pointer management for a disk drive
- Patent Title (中): 为磁盘驱动器写入指针管理
-
Application No.: US13662353Application Date: 2012-10-26
-
Publication No.: US09383923B1Publication Date: 2016-07-05
- Inventor: James N. Malina , Joo Peng Teh , Sang Huynh , Carl E. Barlow , Robert M. Fallone , William B. Boyle , Glenn Cheng , Kuang Hwa Teo , Peng Lee Liang , Daniel D. Reno
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G06F13/00
- IPC: G06F13/00 ; G06F13/28 ; G06F3/06 ; G11B20/12

Abstract:
Write pointer management for a disk drive including a disk having a plurality of sectors and a non-volatile memory (NVM) for storing data. Data is sequentially written sector by sector on the disk. The data written in a sector includes a write status indicator indicating that data has been written in the sector. A write pointer is stored on the disk or the NVM as a check-pointed write pointer. The write pointer corresponds to a current sector for writing data on the disk. During a write pointer recovery process, the check-pointed write pointer is retrieved, and at least one write status indicator is scanned in a range of sectors from the sector corresponding to the retrieved check-pointed write pointer and a last sector to identify the current sector for writing data. The write pointer is set to correspond to the identified current sector.
Information query