i'll look at this to see if we can add it to the driver.

On Sun, Jul 15, 2007 at 09:03:54AM +0200, Otto Moerbeek wrote:
quoted text
> 
> On Sun, 15 Jul 2007, Otto Moerbeek wrote:
> 
> > On Sun, 15 Jul 2007, Brandon Lee wrote:
> > 
> > > Hi Marco,
> > > 
> > > There is no option to enable write cache via the PERC 5i/R controller
> > > or Bios.  From bios, i could only select the perfornance of the HDD as
> > > in "Bypass, Quiet, Suggested and Performance".
> > 
> > I've seen this before. For some stupid reason you cannot enable the
> > write cache from the BIOS. What a collegue did is use a linux live CD
> > with a management program from LSI to enable it. After that all was
> > OK. 
> > 
> > 	-Otto
> 
> BTW, I found the instuctions from my collegue here. 
> Quick translation form dutch:
> 
> Get linux drivers from dell site: mptlinux-3.02.83.12-5dkms.noarch.rpm
> Put the drivers on a USB stick.
> Boot knoppix live cd (http://ftp.knoppix.nl/os/Linux/distr/knoppix/KNOPPIX_V5.1.1CD-2007-01-04-EN.iso)
> 
> Then in knoppix:
> 
> sudo -s
> mount /dev/sda1 (the USB stick)
> cd /media/sda1
> cp mptlinux-3.02.83.12-5dkms.noarch.rpm  /root
> cd /root
> alien -i mptlinux-3.02.83.12-5dkms.noarch.rpm
> cd /ramdisk/usr/src/mtplinux-3.02.83/lsi
> tar xvfz lsiutil.tgz
> cd lsiutil
> make
> ./lsiutil
> 
> choose controller (er is er maar een)
> choose RAID functions 
> choose change Volume settings
> first option: Write Cache Enabled (Yes/No default No): Yes
> remaining thing default
> close and reboot.
> 
> ugly but it works.
> 
> 	-Otto