Bug 2732

Summary: kernel shuts (IDE) drives down when rebooting
Product: Power Management Reporter: Michael Renner (robe)
Component: OtherAssignee: power-management_other
Status: CLOSED PATCH_ALREADY_AVAILABLE    
Severity: low    
Priority: P2    
Hardware: i386   
OS: Linux   
Kernel Version: 2.6.6 Subsystem:
Regression: --- Bisected commit-id:

Description Michael Renner 2004-05-19 15:30:57 UTC 
The more recent 2.6 kernels don't just issue a "power down" to all (IDE?) discs
when halting the machine but also when rebooting it. This is suboptimal since it
reduces the discs lifetime (though this is probably negligible compared to the
expected start-stop counts of modern drives) and increases the reboot duration
(the BIOS has to spin the disks up again which can take several seconds for each
drive)

A corresponding bugzilla
(https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=122966) entry on redhat
also talks of BIOS which timeout while the drives spin up.