Dear all,
I have an external USB2 3.5" HD casing that's causing me some grief.
It's by mapower (http://www.mapower.com/), and uses the genesys
chipset (I think).
I have a 160gb, ATA133 Seagate HD in it (that I installed myself).
I've installed the most recent version of their driver (2.30).
But it's a bit unstable (it doesn't always mount/unmount correctly,
and behaves a little erratically) and sometimes causes kernel panics
(about once /week).
My Computer is a G4 ibook 12" 800, running Tiger, although these
problems existed with Panther too.
I have a *slight* suspicion that it could be the HD itself that
causing problems - is there anything here to suggest this?
Here's a sample of panic.log that I think is relevant:
----------------8<-----------------
panic(cpu 0): zalloc
Latest stack backtrace for cpu 0:
Backtrace:
0x000835F8 0x00083ADC 0x0001EDA4 0x00039038 0x000241A0
0x00247870 0x007F94B4 0x006A7108
0x006AA3C4 0x006A954C 0x006A5F4C 0x006A5B1C 0x006AE37C
0x006B5070 0x006AE37C 0x006B16EC
0x006B0528 0x000D7894 0x001DECC4 0x000B87A0 0x000B95E0
0x000B92E0 0x001DD564 0x000CE304
0x00222A00 0x0022289C 0x002463E4 0x00094160 0x00000000
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOSCSIBlockCommandsDevice(1.3.8)@0x7f8000
dependency: com.apple.iokit.IOStorageFamily(1.3.4)@0x6a0000
dependency: com.apple.iokit.IOSCSIArchitectureModelFamily
(1.3.8)@0x3b4000
com.apple.iokit.IOStorageFamily(1.3.4)@0x6a0000
Proceeding back via exception chain:
Exception state (sv=0x228A7280)
PC=0x9002A4CC; MSR=0x0000D030; DAR=0x1979D004;
DSISR=0x40000000; LR=0x902A17F4; R1=0xF060B6F0; XCP=0x00000030 (0xC00
- System call)
Kernel version:
Darwin Kernel Version 7.8.0:
Wed Dec 22 14:26:17 PST 2004; root:xnu/xnu-517.11.1.obj~1/RELEASE_PPC
----------------8<-----------------
Does anyone have any suggestions? Anyone successfully using this
device? Any recommendations?
Thanks in advance,
-Gus