Wednesday, July 4, 2012

Analysis of Hard Disk Bad Sector - Part 5/5

3. SMART Failure Predicted on Hard Disk
SMART (Self Monitoring Analysis and Reporting Technology) is system disk monitor, to detect damage, hoping to avoid data loss in case of disk damage. When the disk is damaged, SMART will provide a warning "SMART Failure Predicted on Hard Disk", Warning: Immediately backup data and replace you hard disk drive. A failure may be imminent, or Hard disk SMART, status bad, backup and replace.
When a hard disk is damaged, backup data is a top priority. Under conditions of SMART Failure Predicted on Hard Disk, data can be saved.
1. When PC is turned on, the message "Hard disk SMART Status BAD, Backup and Replace".
2. Restart computer, press Delete key to enter BIOS
3. Change setting SMART Monitoring, from Auto/Enable to Disable

This solution is temporary, by disabling SMART function, damage to the hard disk will be ignored, but we recommend you do a back-up data.

SMART Failure Predicted on Hard disk, does not happen instantly. SMART Failure on hard disk, occur in several stages. SMART failure is the culmination of hard disk damage, which occurs of bad sectors beginning, bad sectors expanded, culminating in the SMART Failure Predicted on Hard Disk.

SMART Failure on System Reserved (Windows 7)
See the picture below
Problems, solutions, and the possibility
Problems = corrupt system booting on windows 7
Solution = repair using System Recovery Options, if fails. Last solution is install fresh OS.
Possibility = system will return to normal, but it will be a big problem in the future.
When install fresh copy OS, system reserved will be formatted, then proceed to install OS.
Format system reserved, it can not fix bad sectors. So, bad sectors still there in system reserved (100 Mb).
If not corrected, bad sectors will expand. Bad sectors on the system reserved, is very dangerous. In many cases, after repair operating system, one day, system will return corrupt, and bad sectors are becoming more widespread. If bad sectors on the 100 Mb increasingly widespread, there will be SMART Failure Predicted on Hard Disk.
When SMART failure occurs, data in C, D, E, F, can be accessed normally, like no damage hard disk. See the picture below. These cases occurred in 160 Gb Hard disk Western WD1600BEVT.
There are two possibilities, the SMART Failure on Hard Disk
1. SMART Failure occurs because there are very severe bad sectors on the front sectors
2. SMART Failure occurs because there are very severe bad sectors on the backward sectors

SMART Failure Predicted on Hard disk, can be defined;
bad sectors on the hard disk, spread very quickly. When a bad sector repair, new bad will appear elsewhere. So, bad sectors on the hard drive, is growing very fast. And bad on new sectors, will continue to emerge.

If we are too late to detect damage to disks, SMART Failure will occur. SMART Failure is the culmination of the spread of bad sectors on the disk. If bad sectors can be detected early, SMART failure will not occur.