Hi everyone, Glad to finally be a part of this great forum.
I'm having a problem with a ST3000DM001. There was a physical problem with the original slider on Head 0 causing the drive to click and spin down.
I replaced the HSA and the drive now stays spinning although I get a few 'recov servo op=0100' errors and then this error below.

"Sim Error-Remaining in BootFW.
Perform a double download without a power cycle"

Could this be that the donor HSA is not compatible or is there something more to the 7200.14 that needs to be done?
Thanks

Here is the terminal output...
http://youtu.be/q1TO68BnvZU

and that donor drive are matched with the patient drive (HSA) ?

The date on the 2 drives are only 4 days apart. The drives are identical. Both HSA codes also fully match including QR code.
I also have another identical one that is about 14 days apart that I could try but it seems that it is not a mechanical issue anymore at this point of the recovery. This drive is a 7200.14 series.

well these drives (DM) series are nightmare. i guess heads are compatible.
can you access terminal ?

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RAID/Server Recovery

Yes, Please see my second post for terminal output of this drive...

I have heard that the DM series are a nightmare to work on, I must admit that I've had problems with another smaller DM series drive in the past.

i can see the terminal output, i mean can you access it by pressing ctrl+z ?

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RAID/Server Recovery

ctrl+z won't bring up the terminal prompt on this drive unfortunately.

Would you swap out the heads again at this point or focus on PC3k modifications?

I may put the heads back in the donor to see if they still work.

did you try shortening the read channels ?
see if you can get into terminal ...

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RAID/Server Recovery

chinopk, I've never tried that so I'm currently looking for the method to do that. I saw there was a neat tool that facilitated the process available online from a foreign country.....

Ive found the read/write channel points on older seagate families but not 7200.14.
The registers do not show BSY anywhere..... Are you just assuming its in this state because I can't enter anything into terminal?

Tip: How to identify the Read Channel test points

by fzabkar

At what point in time do these points have to be shorted?

Drive works with Servo, but can't work with the SA. Shorting w/r pins will not help, ctrl+z will not bring in command mode.
Try to start from H1, ignore H0. Otherwise think about new heads or find out is it current heads replaced accurately.

Is there a way to try that without a PC3K?
I think I should attempt that before swapping the 8 heads again... That procedure went pretty good the first time.

If you have enough experience and knowledge - you can do it without PC3K Usually, Terminal is enough.

"you wrote: "ctrl+z will not bring in command mode."
Which is correct.... it outputs info and that's it.

It only output info... Some fw outputs nothing.
Some terminal commands supports by kernel mode. Most parts of terminal commands provided by overlays from surface.

Drive attempts to read from the SA, but unable to do that.

For DM Seagates good head swap is the one, after which you can make the drive start reading :)

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