Visit Jeremy's Blog.
Go Back > Forums > Linux Forums > Linux - Hardware > Linux - Embedded & Single-board computer
User Name
Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.


  Search this Thread
Old 08-16-2014, 07:05 PM   #1
Registered: May 2006
Location: Mt Umunhum, CA, USA, Earth
Distribution: Debian/ Fedora/ Ubuntu/ Raspbian
Posts: 549

Rep: Reputation: 40
Raspbian, external USB hard drive, reboot fails.

Hi group,

I have just reinstalled my Raspbian OS on an external USB hard drive because of many failed SD cards. Now when I reboot, it fails because the hard drive powers down and stays down. I need to power down completely before the machine will restart. I am using an external power supply for the hard drive and the Pi. Looking at using a 555 chip with a relay but not sure how to trigger the circuit?

Has anyone else seen this problem and what did you do to work around it?
Old 08-16-2014, 11:46 PM   #2
Registered: Jun 2003
Location: Washington
Distribution: Raspbian, Ubuntu, Chrome/Crouton
Posts: 374

Rep: Reputation: 50
This post looks like it has some ideas

Yes hdparm is he way to do this. Can make things a tad unstable, when the OS tries to access the hard disk, and it needs to spin up first, things time out.

There are various flags you can pass, -y -Y -s -S, read the man page.

Not all hard drive take all options - but you might as well try. Usually some work.


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
Raspbian Stopped Seeing USB Hard Drive? NotAComputerGuy Linux - Newbie 1 07-17-2013 07:10 AM
Booting Linux on an external USB hard drive (not a memory stick, a hard drive) comcastuser Linux - Hardware 4 01-13-2010 07:59 PM
Fedora 7 does not find usb external hard drive after reboot mamyotte4 Linux - Hardware 4 07-10-2007 06:43 AM
external enclosure for an internal hard drive vs external USB hard drive powah Linux - Hardware 1 03-10-2006 10:03 AM
Installing grub to external USB hard drive for later use as internal hard drive dhave Linux From Scratch 2 12-10-2005 09:48 AM > Forums > Linux Forums > Linux - Hardware > Linux - Embedded & Single-board computer

All times are GMT -5. The time now is 11:33 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
Open Source Consulting | Domain Registration