Detrmining the size of the sector spare area , PM. Hi, I am interested in determining the size of the sector spare area - the area used by the hard drive to reallocate defective sectors. This information is not available through the manufacturer nor any utilities that I could find.
Is there any way to simulate defective sectors so that when the upper limit is reached and the spare area is filled, a disk failure will be generated at which time I'll know how many bad sectors it took to fill the spare area. Thanks, Ernie. Tags: None. David PassMark.
I don't know of any tool that directly reports this. But here is something interesting. What I have noticed is that the Total sectors figure is less than one would expect from the other numbers. Add a comment. Active Oldest Votes. Where are all of these extra sectors coming from? Modern disks have a pool of spare sectors that can be swapped with damaged sectors. This is called the Spare Sector Pool. Spare sector pools All modern hard disk drives have a spare sector pool.
Source Bad sector remapping How can I get some kind of warning so I can replace my hard drive before it dies? Use smart monitoring software. Improve this answer. Community Bot 1. That's a confusing and low-quality article used for a citation. I've done extensive work with older disk drives and controllers, and the explanations made little sense and the bad grammar doesn't help. AFAIK zero-filling a drive doesn't repair or fix bad sectors. A much better article is Bad sector remapping — sawdust.
Does it specifically tell you how many sectors are left in the spare sector pool? I've updated the answer. SMART won't tell you exactly how large the spare sector map is but it will tell you how much of it is used. Combined with the trigger information as to percentages for a SMART failure and you should be able to determine with a fair amount of accuracy just how big the spares are.
Sign up or log in Sign up using Google. Your hard drive maker will ship you a usually refurbished hard drive from their stock that is completely wiped clean. They will not ship your drive back to you if you forget to back something up. T data for every drive in your computer. You can download it from the CrystalMark website. T status of drives inside your Mac. On a Mac you can use an application called DriveDx to check your reallocated sector count.
Reallocated Sectors and Hard Drive Failure A reallocated sector count above zero does not immediately tell us whether or not the hard drive is doing to fail, but it can be an early warning sign. Is it safe to keep using my hard drive? These are defects that develop during normal use. A brand new HDD should have 0 reallocated sectors and 0 pending or uncorrectable sectors. You must log in or register to reply here. Please help, long day.
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