Hello,
I have an old system that works fine but I want to use a bigger HDD. The system boots with the old one but it refuses to even load the BIOS with the new one. Even if I do not connect the data cable it behaves like this as long as the power cable is connected to the HDD. If I unplug the disk from the power the machine starts booting but if I plug it in again the system immediately dies. This can be repeated forever. The old disk is removed when I do this. Now, the old disk (IBM Deskstar) requires 0.3A at 5V and the new one (WD Caviar Blue) 0.65A. I don't see that this small difference could be the cause of the problem. The machine has no power hungry devices connected. I have had the WD replaced to make sure that it was not just a bad specimen but the result is the same with the replacements.
What can I be missing here? Any help is much appreciated.
I have an old system that works fine but I want to use a bigger HDD. The system boots with the old one but it refuses to even load the BIOS with the new one. Even if I do not connect the data cable it behaves like this as long as the power cable is connected to the HDD. If I unplug the disk from the power the machine starts booting but if I plug it in again the system immediately dies. This can be repeated forever. The old disk is removed when I do this. Now, the old disk (IBM Deskstar) requires 0.3A at 5V and the new one (WD Caviar Blue) 0.65A. I don't see that this small difference could be the cause of the problem. The machine has no power hungry devices connected. I have had the WD replaced to make sure that it was not just a bad specimen but the result is the same with the replacements.
What can I be missing here? Any help is much appreciated.