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Author Topic: BlackScreen on HP Compaq dc5850 AMD Athlon Dual Core 4450B  (Read 6068 times)
Bernhard T.
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Posts: 164


« on: June 18, 2010, 03:00:20 PM »

trying to boot A2 ISO CD on a HP Compaq dc5850 AMD Athlon Dual Core 4450B yields in a black screen unusable system.

Switching off and on yields turbo sounds and black screen; unplugging & replugging reverts to a usable system.


Hit Scroll Lock during boot and entering configuration variables:

TraceMode=1
Init=
c


gives the following information:


...
ATADisks: Scanning PCI bus for IDE & SATA class devices ...
ATADisks: Found PCI device on bus 0, device 17, function 0
ATADisks: Adding Controller 2120, 2140, 2100, IRQ: 10: IDE4..5, Bus-master enabled
ATADisks: Adding Controller 2128, 2140, 2108, IRQ: 10: IDE6..7, Bus-master enabled
ATADisks: Detected devices:
No devices found.
...
BootConsole: Mount failed on BootVol2
DiskVolumes: no devices


any ideas, how to resolve it?

Bernhard
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staubesv
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Posts: 387



« Reply #1 on: June 18, 2010, 04:56:47 PM »

Most likely, your disk controllers work in "native" mode (aka AHCI).

In the BIOS setup, it should be possible to set them to something like "compatible" or "enhanced". Recent features as native command queuing are not available then (also not to other OSs), but that's something one can live with...

Also worth a try: ATADetect=legacy (although most likely won't help here since at least to non-legacy controllers are detected)
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Bernhard T.
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Posts: 164


« Reply #2 on: June 21, 2010, 10:04:54 AM »

In the BIOS setup, it should be possible to set them to something like "compatible" or "enhanced". Recent features as native command queuing are not available then (also not to other OSs), but that's something one can live with...

The BIOS setting was: Legacy mode IDE
changing it to: Native Mode IDE

A2 starts as expected.

Also worth a try: ATADetect=legacy (although most likely won't help here since at least to non-legacy controllers are detected)

switching BIOS back to legay and adding

ATADetect=legacy

works also.

thanks
    Bernhard
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