Successfully flashed my Seagate 7200.11's to AD14
Took a lot of playing around, but I managed to successfully upgrade the firmware on my 7200.11's. For those interested here's how it went...
I downloaded the patch software at the
link provided by
VanMan earlier in this thread. I made a bootable CD per the instructions from the provided ISO image. Next I booted that CD on my MP and it loaded up a DOS shell and dumped out the contents of README file with instructions. The instructions specifically state that you should have no other drives installed other than the one being patched. OK, so shutdown, remove all my drives except for one of the 7200.11's (I have two in RAID0) and reboot the CD. This time, things didn't go so well - the boot CD hung part way through it's startup script trying to run a program called InitDisk. InitDisk was complaining that the disk did not have a valid partition map present (since it was formatted as HFS+). I believe that it worked properly the first time around since my boot drive at one point had BootCamp installed which I guessed left enough partition info around to keep InitDisk happy.
I eventually concluded that the patch software was not going to run unless it found a valid DOS partition on the disk. I would therefore need to reformat my drives. So - I made a second backup of my RAID0 drive setup (first backup is TimeMachine but since I've never used it to completely restore a drive I don't quite trust it yet), and then formatted the two drives as FAT32. Tried the boot CD again - and still got errors about not finding a valid partition. I then tried a number of things to try and get this working, since I knew from my very first boot that it
was possible. I moved the disk to different slots, tried installing OSX on it then adding BootCamp, nothing seemed to work. At one point I started the boot CD and then left for supper - when I got back there was the README file on the screen. It turns out that the drive does need a valid DOS partition map on it AND for reasons I never did discover, the 7200.11 drives were showing up as drive 2. InitDisk needed to timeout it's first try at drive 1 (which takes between 1-2 minutes) before it eventually found the 7200.11 as drive 2.
With the patch software loaded, I followed the on screen instructions and within a couple of minutes had a message indicating a successful flash. Repeat the exercise for the second drive, and then re-assemble all the drives back into the MP and boot OSX. A quick check of system profiler shows that both drives are now at revision AD14.
Was it worth it? I ran Xbench's disk test both before and after flashing the drives. After making the backup of my RAID0 I wiped it clean and ran a test, and then after the flash I re-configured the RAID0 and ran another test. The results are below, but in summary for sequential access there was essentially no difference. For random access there is around a 45% improvement in performance, except for writes of small (4K) blocks. Writes of small blocks actually takes a small penalty with the patch installed. My conclusion - you definitely want the AD14 firmware if you have a 7200.11 drive.