On 14 Feb, John <jwb@xxxxxxxxxx> wrote: > The first IDE socket is the one nearest the edge of the board. Thanks. But now I have another symptom, a buzz! I still have this intermittent boot-up failure with two (or one as 'master') HDDs in their correct places - Recall from my first post: > ------------------------------------------------ > After switch on: Green light on and immed afterw orange light on. > Both HDDs click and whirr for 2-3 sec. Then nothing but a faint > whirr from the power supply. After less than a minute the orange > goes out. Switch-off at the rear switch causes both HDDs to click > off. I have: New 120gb WD drive set as master with slave The orig > 120gb maxtor drive set as slave (no link) Both plugged into the > motherboard socket nearest the edge with a new strap cable. Floppy > is connected and plugged into power supply, but no light on at the > front. No bootup sounds from that. > ------------------------------------------------ I now have a loud burst of noise from the speaker coupled with mouse/kbd freeze-up. First time it occurred last week there was a short 'bip' and immed frozen pointer/kbd. I was using the pointer at the time, accessing a filer menu item. Next time it occurred the sound was a raucous continuous loud BUZZZZ! coupled with unresponsive mouse/kbd, and after 2-3 seconds (and no Ctrl-F12 availability) I shut down with the rear switch. I have a newish PSU (300W June 06). > If using 1 drive it goes to the OTHER end of the cable AND MUST be > set to master. (The use of 'Cable Select - CS' on the iyonix is not > the preferred method) > If using 2 devices on the cable, position of master and slave is > irrelevant.. either could be master or slave .. depends on which way > around the devices are happiest, BUT one must be master and the > other slave. Checked: yes. Still experience many failed boot-ups (see above). One such resulted in a black monitor screen with 4 lines: ------------------- | RISC OS 512MB | 80321 Processor | Acorn ADFS | _ | and no more boot action Are there some tests I can do here? Or take it into ESD in Auckland for a hardware checkup? Brian -- Auckland NEW ZEALAND --- To alter your preferences or leave the group, visit //www.freelists.org/list/iyonix-support Other info via //www.freelists.org/webpage/iyonix-support