Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Laptop and Netbook
User Name
Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).


  Search this Thread
Old 05-30-2010, 05:02 AM   #1
Registered: Mar 2007
Location: England
Distribution: Arch
Posts: 392

Rep: Reputation: 34
hdparm load cycle/head parking question


I've been doing some research regarding the Load Cycle Count on laptops. Mine is increasing by approximately 6 per minute. This barely changes between "hdparm -B 1" and "hdparm -B 253". If I set "hdparm -B 255" after 10 minutes, I do not get a single increase (as expected).

That is fine, but is it? I read that the hard drive is parking the heads to protect itself (with a "hdparm -B 128" for example). This is my question; what is the risk of not parking the heads (by running hdparm -B 255")?

Even though my hard drive will last a number of years with 6 increases per minute, the clicking of the hard drive is really annoying. Setting it to not park the heads is much more peaceful!

Old 05-30-2010, 06:22 AM   #2
Registered: May 2001
Posts: 29,415
Blog Entries: 55

Rep: Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591Reputation: 3591
Heads parking for protection (shock sensor) is different from the ancient party game of "parking heads" (as played in the decade when carpet still was shaggy, furniture included Lava lamps, cars had more fins than a Lockheed Constellation and Jack Vance wrote "The Pnume"). If you've researched the "issue" then you should have stumbled across a Slashdot thread indicating a "parking bug" which was not a GNU/Linux or 'hdparm' problem but basically HW manufacturers fscking up (assuming all HDs are written to constantly and only by mcrsft wndws). says there's no correlation between Load/Unload Cycle Counts and failure rates. More tech details at


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
question about Debian's slow release cycle newbiesforever Linux - General 3 09-16-2009 04:37 AM
Western Digital Caviar Green 1TB (WD10EADS) load cycle count issues? shadowcat Linux - Hardware 3 08-15-2009 03:27 AM
hdparm doesn't load hdparm.conf KOTAPAKA Linux - Hardware 2 05-21-2008 09:54 AM
How do you run a print-head cleaning cycle?? Huddlebum Linux - Newbie 1 04-02-2004 03:44 PM
hdparm question Cheese Linux - General 1 12-25-2001 08:03 AM > Forums > Linux Forums > Linux - Laptop and Netbook

All times are GMT -5. The time now is 03:10 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration