Date: 2016-09-23 05:23 am (UTC)
From: (Anonymous)
Someone on Reddit suggested that since Linux doesn't use BIOS calls for anything and addresses the hardware in native mode, and the hardware still supports AHCI native mode, that someone should "teach GRUB read-only RAID support" and then have the kernel set to switch the hardware out of RAID and into AHCI native mode as soon as it is loaded.

Is this an option? Sorry if this is obviously not an answer.

As for the power management thing, Dell lets you turn off the same "RAID" mode and boot Linux. What kind of runtime loss are we talking here? Can't be that bad or someone would have said something. SSDs use like 2 watts? Even if it never goes into power saving mode, it's about like turning your backlight up 5%, right?
Identity URL: 
Account name:
If you don't have an account you can create one now.
HTML doesn't work in the subject.


If you are unable to use this captcha for any reason, please contact us by email at

Notice: This account is set to log the IP addresses of everyone who comments.
Links will be displayed as unclickable URLs to help prevent spam.


Matthew Garrett

About Matthew

Power management, mobile and firmware developer on Linux. Security developer at Google. Ex-biologist. @mjg59 on Twitter. Content here should not be interpreted as the opinion of my employer.

Expand Cut Tags

No cut tags