Feeds

Ubuntu laptop clan trapped in hard drive hell

OS 'not to blame' for maniacal disks

3 Big data security analytics techniques

The Ubuntu operating system has been charged with crimes against hard drives. A number of users have complained this week about the OS (7.04/7.10) forcing drives to spin up and down at an unnatural rate due to some very aggressive power management features. According to Ubuntu wizards, however, this is a firmware/BIOS issue and not the OS's fault.

A couple of user forums have started fill up with people commenting about their systems going through an unusual number of load cycles while under battery power. This excessive throttling of the hard drive could lead to quicker than expected hardware failures.

One user complains, "When switching to battery power, /etc/acpi/power.sh issues the command hdparm -B 1 to all block devices. This leads to extremely frequent load cycles. For example, my new thinkpad has already done well over 7000 load cycles -- in only 100 hours.

"That's at least one unloading per minute. Googling for "load unload cycles notebook OR laptop" shows that most laptop drives handle up to 600,000 such cycles."

This best explanation we've found of the hard drive mechanics at play comes from Linux-Hero.

The drive reported has a life span of 600,000 load/unload cycles before the precisely machined tolerances in the drive begin to deteriorate. Somewhere along the line, the drives are being asked to spin down very frequently. These are factors controlled by a power management utility within the drive called Advanced Power Management, or apm, and are dictated by Ubuntu after boot-up. The problem is simply that the drives are spinning up and down too often, and the sliders are being forced to roll on and off the ramp where they’re stored when in off use, causing wear and tear on the slider assembly (not to mention the motor spinning the drive).

But the Ubuntu nation contends that it's the laptop makers who are after aggressive power management that are causing the problems.

One blogger writes that the issues are OS independent. "These aggressive power management settings are set by your BIOS or harddrive firmware. Windows and/or Mac OS X might be overriding these settings which might make Ubuntu look bad if Ubuntu doesn’t override these settings."

Meanwhile, an Ubuntu developer explains that the OS creators have tried to avoid messing with the BIOS and firmware setting provided by hardware makers. So, this hands off approach can lead to major hard drive wear and tear, but that's what the laptop vendors intended.

According to Linux-Hero, you can fix the problem by running hdparm -B 255 /dev/sda. This will shut down the advanced power management features of your hard drive. A number of users have confirmed that this workaround has helped them as well. (Of course, your hard drive my eventually catch on fire, which would also lessen its lifespan.)

It looks like Hitachi, IBM/Lenovo and Dell units are all mentioned as potential culprits. And, if you hear you hard drive clicking, you're almost certainly suffering from this condition.

Good luck. ®

Register hack Ashlee Vance has just pumped out a new book that's a guide to Silicon Valley. The book starts with the electronics pioneers present in the Bay Area in the early 20th century and marches up to today's heavies. Want to know where Gordon Moore eats Chinese food, how unions affected the rise of microprocessors or how Fairchild Semiconductor got its start? This is the book for you - available at Amazon US here or in the UK here.

SANS - Survey on application security programs

More from The Register

next story
Samsung Galaxy S5 fingerprint scanner hacked in just 4 DAYS
Sammy's newbie cooked slower than iPhone, also costs more to build
US mobile firms cave on kill switch, agree to install anti-theft code
Slow and kludgy rollout will protect corporate profits
Leaked pics show EMBIGGENED iPhone 6 screen
Fat-fingered fanbois rejoice over Chinternet snaps
Microsoft lobs pre-release Windows Phone 8.1 at devs who dare
App makers can load it before anyone else, but if they do they're stuck with it
Oh no, Joe: WinPhone users already griping over 8.1 mega-update
Hang on. Which bit of Developer Preview don't you understand?
Report: Apple seeking to raise iPhone 6 price by a HUNDRED BUCKS
'Well, that 5c experiment didn't go so well – let's try the other direction'
Feast your PUNY eyes on highest resolution phone display EVER
Too much pixel dust for your strained eyeballs to handle
Rounded corners? Pah! Amazon's '3D phone has eye-tracking tech'
Now THAT'S what we call a proper new feature
Hearthstone: Heroes of Warcraft – A jolly little war for lunchtime
Free-to-play WoW turn-based game when you have 20 minutes to kill
Zucker punched: Google gobbles Facebook-wooed Titan Aerospace
Up, up and away in my beautiful balloon flying broadband-bot
prev story

Whitepapers

Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.