The bad sectors I mentioned exist on the TOC area, not on the DATA area. This is what allows a moded PS2 figure out a disc is not original and make us need to patch it's ROM or use a gameshark to boot.
Probably the disc has a external copy of XVCDMAN lib for for purposes of magic gate encryption/authentication.
So there's two disc checks after the elf was loaded. Interesting ...
Did you tried to install software on the memorycard (system driver or DVD driver) with the swapmod on ?
I think I've made all these tests already even tried non sony HDDs from maxtor, but I didn't had a exacxt match of size to test. It obviously turned the HDD module on, checked it, figured out it was the wrong HDD then turned it off again ...
At the screen a red square telling me to power off the PS2 and reconnect the BB unit properly to the system then try again (lol)
I am curious to hear if you suceed on your tests. I didn't report mine because I was frustrated with the results.
Other interesting test I made some days ago was using my external HDD into a expansion bay (Japanese) PS2. It ran fine, and seems like Sony completely removed the bundle it had on v0.1 of the HDD discs.
(Would only work at the PS2 which formated it. In case of a replacement PS2 being needed, you had to reformat the HDD)
SCPH-10000_GH-001 SCPH-15000_GH-003 SCPH-18000_GH-008 SCPH-30001_GH-005 SCPH-30000_GH-016(V4) SCPH-30001_GH-010(V4)
2xSCPH-10190, 2xSCPH-10350, 2xSCPH-10280
"**** j0 hackers!"
-Sjeep (As seen on TOXIC OS ELF...)