How do I select AHCI option before installing Ubuntu?

[nrundy]

In order for TRIM to work on an SSD with encryption, I need to make sure to "select the AHCI option before installing the operating system."

Does anybody know how to do this? I have no idea what this is talking about. I'll be installing 11.04 with no dual-boot. Just Ubuntu alone.

[Bucky Ball]

Why 11.04? Not even released yet. Not interested in trying something stable with longer support; 10.04 LTS for instance?

Go 11.04 and this will be the least of your worries. ;)

[nrundy]

for a different computer. the desktop will be running 10.04. I want to have some fun with 11.04 :)

[nrundy]

nobody has any experience doing this AHCI thing?

[Quackers]

It is a setting in your bios.

[nrundy]

So I just go into the BIOS and look for AHCI? then make sure it is "Enabled". Then I can proceed to encrypt the partition and install the OS?

This is all there is to it?

[Quackers]

It is for me :-)
It may not be called AHCI though. It can be called other things. Anything that refers to enhanced or advanced compatible may be it :-)

[nrundy]

okay. Thanks Quack, much appreciated :)

encrypted 11.04 here I come :)

[Quackers]

Encrypted is not something I use. Nothing too important on here :-)

[nrundy]

it's the only sure-thing for being able to "wipe" the drive on an SSD before you get rid of it at end of life. traditional HDD wipe protocols don't work on SSD

[Quackers]

Oh, a hammer does that :-)

[BadgerKid]

In order for TRIM to work on an SSD with encryption, I need to make sure to "select the AHCI option before installing the operating system."

Does anybody know how to do this? I have no idea what this is talking about. I'll be installing 11.04 with no dual-boot. Just Ubuntu alone.

You may want to check whether your hardware supports AHCI, e.g.,

http://www.bootbeta.com/blog/does-your-computer-support-sata-ahci.html