Bug 24113

Summary:	IDE drive not running at full ATA-100
Product:	[Retired] Red Hat Linux	Reporter:	Bryan Leopard <bryan.leopard>
Component:	kernel	Assignee:	Michael K. Johnson <johnsonm>
Status:	CLOSED NOTABUG	QA Contact:	Brock Organ <borgan>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.1
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2001-01-22 20:11:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Bryan Leopard 2001-01-16 15:28:52 UTC

Compaq ML330ES
Florence Beta 2

This unit has an ATA-100 capable drive and controller, but the kernel is 
not enabling mode udma5.  Verified by running hdparm -i

workaround:
Enable udma5 manually using hdparm.

Comment 1 Arjan van de Ven 2001-01-22 18:50:01 UTC

Do not ever use hdparm to enable udma5. Use the "ide1=ata" on the lilo
command-line, but only if you have the proper (80 ribbon) cable.

The reason that the parameter is needed is that linux is not quite capable
of detecting the presence of this cable, and assumes the safe default of not
having the cable.

Comment 2 Arjan van de Ven 2001-01-22 20:11:51 UTC

make that "ide1=ata66"

Comment 3 Arjan van de Ven 2001-02-23 12:54:51 UTC

Closing as not a bug, as this isn't one.