Cisco 11503 Administration Guide - Page 373

Appendix B Using the Offline Diagnostic Monitor Menu Performing a Check Disk During the check disk process, the CSS detects and recovers from the following error conditions: • File Allocation Tables (FATs) are out of synchronization • Sector write truncation revitalization (may occur from a power loss at the time the CSS is writing to the disk) • Bad cluster identification (of all in-use cluster) and mapping in the FAT when reformatting the disk • Crosslinked FAT entries • Disk entry validation, name, size, cluster assignment, cluster chaining • Recovery of lost clusters The amount of time the CSS requires to perform a disk check is proportional to the number of installed files and directories on the disk. The greater the number of installed files and directories, the longer the CSS takes to complete the disk check. Note The CSS cannot recover from sector failures located within the first 754 sectors on the disk (for example, boot, primary/secondary FAT, or root directory entries). If a sector failure occurs, use the Format Disk option of the Disk Options menu (see the "Reformatting the Disk" section). If the CSS is unable to properly format the CSS disk after using the Format Disk option, contact TAC. To perform a disk check: 1. Select option 2 from the Disk Options menu. The CSS prompts you about correcting errors if discovered. Correct errors if discovered (yes,no): OL-5647-02 Cisco Content Services Switch Administration Guide B-23