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Laptop hard drives are made to be fairly rugged but there are limits. Here are some things to help make your laptop hard disk last as long as possible.

I have a Dell Latitude D610 laptop. It is 2 years old. I am on my third hard drive. I just started receiving "CRC" errors. Is there something about this laptop that could be causing all of these hard drive issues? My use is typical... internet, office suite activity, adobe suite activity, music. My security is good... Trend, firewall on router (Modem -> Router/Firewall -> Access Point -> me). I am at a loss as to why my hard drives are not lasting for more than several months!

For the record, I actually have three of the Latitude 600 family. I run a D620, my wife has the D610 you have, and my older D600 is being used by an assistant.

And they're all on their original hard drives.

The good news is that the type of failures that you're seeing can help us narrow down the search as to what might be going on. The bad news is that it's a short list.

CRC errors are physical errors on the hard drive. Right away that eliminates almost all thoughts of software. The fact that you're running typical applications and have a reasonable security set up is fantastic, but doesn't really apply to the kinds of things that would result in CRC errors increasing over time.

So what does matter?

As I said, it's a physical problem, so we look at physical causes. For hard drives that typically means temperature extremes, and for laptop hard drives it also means what I'll call "handling".


Like almost all components in your computer, hard drives both create, and are sensitive to, heat. By that I mean that if they get too hot, they're going to fail. Typically that failure is either sudden and complete (it just stops working), or possibly as you're seeing, surface errors increasing on the internal hard disk media resulting in CRC errors.

"CRC errors are physical errors on the hard drive. Right away that eliminates almost all thoughts of software."

The problem is that the amount of heat that's typically required to get a hard drive to fail is much higher than you might think. So the fact that your hard drive might be hot to the tough isn't necessarily a sign of a problem - they do run hot. In order to fail they have to get really hot. (I know, that's not a technical term, but how hot is too hot varies from drive to drive, so I'll just leave it at "really hot" as we discuss the concepts.)

Really hot can happen for two reasons:

  • Bad ventilation. One of the biggest problems with laptops is how to keep them cool in general. There are fans trying to blow cooling air through the machine, but depending on how you have things set up it's often very easy for the ventilation to be blocked or otherwise impaired. In other words, the cooling system doesn't, and the entire machine gets too warm. Typically other components suffer first, but it's certainly possible for the hard drive to show failure symptoms first.

  • Continuous, hard use. First I have to say that with proper ventilation this shouldn't happen, but the practical reality is that it does. If you use your hard drive continuously, and by that I mean the disk activity light is on, solid, for hours and hours at a time, the drive is going to get hot. Remember I said that the drive generates heat, and that's not just the drive spinning, which it does all the time,. but also the arms within the drive moving back and forth as data is read and written to the various locations on the hard disk platters.

And of course, both of those two things can happen at the same time: blocked ventilation coupled with really hard disk activity over a long period of time, and the drive could certainly overheat.


I'm sure you haven't dropped your laptop recently. And it's probably obvious to you that doing so isn't a good thing to do. A true drop is likely to do external damage and dislodge components, but it could also do internal damage to the hard drive as well.

What I see a lot of people do that makes me a little nervous is leaving their computer on while they move it from place to place. Now, I'll admit, I do this as well in limited circumstances, but I'm very careful about how and when I do it.

Carefully carrying your laptop to your next meeting in the office next door? That's probably ok. Late to a meeting and jogging down the hall with your laptop running? Probably a bad idea.

Here's why: when your laptop is off the "heads", the actual read/write mechanism that moves around and either floats over or gently touches the magnetic media is typically parked in a safe area where bouncing around will do little or no damage. On the other hand if the disk head is active because the computer is on, and the computer and the drive within it get jostled around enough, there is a chance that the head might come into damaging contact with the magnetic media and create a tiny, perhaps microscopic, scrape. The result? CRC error.

So if you're regularly bouncing your computer around while it's running, that could result in the problems that you're seeing.

And to tie it all together into a worst case scenario: if your ventilation is blocked and your machine can't cool down, and if your hard drive is continuously active and generating even more heat, and then you bump, jostle or drop the computer - well, I'd be impressed if there wasn't some kind of error that resulted.

So the advice is simple:

  • Keep your computer clean and well ventilated.

  • If you do run your hard disk continuously for extended periods, consider an additional fan or cooling platform

  • Try to minimize bumps and shakes if you do move your computer while it's running.

One last suggestion: you may be able to lengthen the life of your hard drives by occasionally running Spinrite. The best way to simply describe Spinrite is that it's like formatting your hard drive without losing any data. Spinrite "refreshes" the data on your hard drive and can often recover damaged sectors as well as delay the impact of some types of pending failures.

There are two down sides to Spinrite: it does run the hard disk continuously for several hours. I had to purchase a additional cooling pad to keep the laptop from overheating.

And Spinrite is not free.

But in my opinion it's worth every penny.

Article C3280 - February 3, 2008 « »

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Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

Not what you needed?

Robert Bunney
February 8, 2008 9:27 PM

Spinrite is a great app as long as the drive to be checked is internal to the machine (sata, pata). USB drives cannot be easily checked. Spinrite is a DOS application. The software creates a self-booting disk using FreeDOS, but there are no standard USB drivers for DOS. There is one non-standard, non-supported driver, but the disk check time goes way up for the USB drive. For example, doing a level 4 check on one 400 GB disk internal to the machine took about 18 hours. Spinrite estimated 158 hours check time for the same drive in a USB enclosure.

Ken Crook
February 9, 2008 10:10 PM

SpeedFan is a free program that monitors the temperature of your laptop's cpu and disk drive.

When the computer fans are running it is interesting to look at the temperatures to see what is happening and why. The program has the ability to change some settings but I would be afraid to change anything.

John E
February 11, 2008 1:06 AM

What I'd add to this is that some people seem to be under the impression that all they have to do to shut down their laptop is to close the lid - this doesn't completely shut down the machine, it just puts it into hibernation. This problem is made worse by Vista, where the control that looks like an on/off switch (rectangular red 'button') has the same effect - you need to go into the next menu layer for a full 'Shut Down'.
The other thing to check is your vehicle suspension - putting a computer in the boot/trunk may gives it a harsh ride - it'll last longer on the passenger seat. (although in some places that may make it more vulnerable to theft, and you might want to fix it with a seatbelt to stop it falling off under heavy braking!)

December 11, 2008 2:43 AM

Hibernation Does actually spin down the drive, making it very safe to move about with. Usually Standby does also spin down the drive, making moving it about safe! ..and easy

Rosemary Southard
June 20, 2009 4:11 AM

Hello: actually it does not help. I wanted to knowwhy the hard drive does not reconize the disk when it is in it. i dont know if the hard drive is working or not sense it is not easly checked. please let me know. thanks.

July 8, 2009 2:25 AM

There is a lot of nonsense being said about hibernate/standby. Hibernate essentially, as you have said, shuts down the computer after dumping the contents of the RAM to the drive. You can shake the computer about as much as you like (within reason) when its in hibernate. Similarly, Standby merely suspends the session to RAM and turns off everything else. RAM doesn't mind being shaken. But neither of these are instant, if you shake it when its entering these modes it is more likely to break the drive as it is writing lots.

January 10, 2010 10:41 AM

i have a toshiba satellite A200, its 2 years old, its always had CPU heat issues, but vaccuming the thing out good every few months seems to work fine.
now i have a new problem, when it was new i could play any game of the "2000" era. but now i have to have the HDD cover off and it has no problem rising to 49 degrees centigrade (death at 52) even when im doing nothing, the HDD hardly works at all. is this linked to the age of the HDD that it just works heaps hotter or does my lappy just hate me

By "lappy" I assume you mean your laptop. I would check for running processes. Often if you have something using 100% of the CPU (even if you are doing nothing) the processor can generate incredible amounts of heat.

September 14, 2010 12:10 PM

I have a laptop and to help cool it I place 2 wine corks under the back to allow more air to circulate. Some times it falls off the corks (could it be the alcohol?) So currently I'm looking for 2 2inch square blocks to put under there.Any suggestions?

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