G
Guest
Guest
Archived from groups: comp.sys.ibm.pc.hardware.chips (More info?)
The motherboard is an ATC-2000 from A-Trend, a now defunct
manufacturer.
The chipset is the 430HX from Intel.
The BIOS is an Award Modular BIOS v4.51 PG dated 07-26-96.
The hard disk is a Western Digital Caviar WD800 (80 GB).
The machine never fails to boot from the diskette.
Occasionally this system does not boot from the hard disk. It
displays:
«DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER».
When it does so, neither Ctrl+Alt+Del, the reset button nor the power
switch cure the problem, until it boots!
When it boots from the hard disk, it works apparently flawlessly.
The hard disk does not seem to be the culprit because I get the same
result with a brand new Western Digital Caviar WD800 hard disk.
Even when the system does not boot from the hard disk, the BIOS «sees»
the
hard disk as a 8 GB hard disk which is OK given the BIOS limitations:
only hard disk controller data is involved here.
When it did not boot, I used disk analysis program to try to read
sectors. The
latter returns a 512-byte string of 0xFE. Why 0xFE rather than 0x00
or 0xFF? Can it give a clue?
Could the power supply be defective? I checked both the +5 V and the
+12 V and they are well within limits. Not having a storage
oscilloscope,
I have been unable to test the timing of the Power Good signal with
the above two supply lines.
Is there a major flaw in the 430HX chipset?
Could it be a BIOS bug? It would not initialize the IDE controllers
properly...
Thank you very much in advance.
--
Jean Castonguay
Électrocommande Pascal
The motherboard is an ATC-2000 from A-Trend, a now defunct
manufacturer.
The chipset is the 430HX from Intel.
The BIOS is an Award Modular BIOS v4.51 PG dated 07-26-96.
The hard disk is a Western Digital Caviar WD800 (80 GB).
The machine never fails to boot from the diskette.
Occasionally this system does not boot from the hard disk. It
displays:
«DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER».
When it does so, neither Ctrl+Alt+Del, the reset button nor the power
switch cure the problem, until it boots!
When it boots from the hard disk, it works apparently flawlessly.
The hard disk does not seem to be the culprit because I get the same
result with a brand new Western Digital Caviar WD800 hard disk.
Even when the system does not boot from the hard disk, the BIOS «sees»
the
hard disk as a 8 GB hard disk which is OK given the BIOS limitations:
only hard disk controller data is involved here.
When it did not boot, I used disk analysis program to try to read
sectors. The
latter returns a 512-byte string of 0xFE. Why 0xFE rather than 0x00
or 0xFF? Can it give a clue?
Could the power supply be defective? I checked both the +5 V and the
+12 V and they are well within limits. Not having a storage
oscilloscope,
I have been unable to test the timing of the Power Good signal with
the above two supply lines.
Is there a major flaw in the 430HX chipset?
Could it be a BIOS bug? It would not initialize the IDE controllers
properly...
Thank you very much in advance.
--
Jean Castonguay
Électrocommande Pascal