fix S3210 SATA performance


My Intel Server board used to  deliver a whopping 3MB/s of sata throughput on all ports with Oracle VM, after a lot of poking around I figured the problem was the disks were not in AHCI mode.

Solution:

Build a new initrd (because otherwise it won’t even find your rootdev…):

mv /boot/initrd-`uname -r`.img /boot/initrd-`uname -r`.backup

mkinitrd –allow-missing –preload=ahci –force-scsi-probe /boot/initrd-`uname -r`.img `uname -r`

enter bios and go to advanced -> sata -> sata mode and change that to AHCI.

boot up and enjoy proper 120+ data rates  from there on.

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