I solved it now, but I don't understand what's going on:
I read about a brand-new firmware VA111900 for another Maxtor drive. I downloaded it and found that it contains the Maxtor Code Load Utility v2.039. With this version and the BANC1B70 (!) firmware files I didn't do a full update but updated boot code and base pages first. Boot code update was successful, while base page was not.
At the next reboot the drive showed up as "Maxtor 7B300S0 BANC1E00" (!) and SMART support and its real size (279 GB). Also an MHDD run showed everything fine (EID, INIT, RST, CX... everything worked).
I booted into Powermax 4.23 which hangs upon initialization. I don't know if it did that in earlier times, but Maxtor took a long time to support nForce4 on Powermax and I guess nF4 support isn't perfect yet.
Then I connected the drive to the SiI3114 controller and rerun Powermax. After having chosen the drive it shows me RMA code "caa00000" and that the drive doesn't pass the basic test. But when I choose to perform the basic test immediately after the message, the drive passes the basic test. It passes the installation test as well and it started the advanced test flawlessly. I canceled it, because it took too long.
I don't know if that is a quirk of Powermax or what else.
The drive runs as before (or better, don't know). Even the partitions and data is still there.
What I don't understand now is:
- Why does rewriting with BANC1B70 boot code lead to recognization as BANC1E00 (what it should have been right after the flash and not "Maxtor SABRE")
- Why does Powermax tell me an RMA code when it tells me right afterwards that the drive passes all tests it performs.
- I am unsure, if the drive only tells me that it uses firmware BANC1E00 or if it actually uses it. I really don't know what's going on, or if the drives are now a BANC1B70/BANC1E00 hybrid.
Until now everything seems fine and the update seems to have worked in the end, but this was more than an average nightmare to me.
And finally I urge Maxtor to make at least the Code Load Utility downloadable from their website because I think I would never have recovered the drive without the newer versions. The included v2.032 was probably the source of all that.
Finally I hope that someone can use my findings to recover mis-flashed Maxtor drives.
Kind regards,
weaker