Dennis... Upon closer examination of the A3353 4 GB hard drive, there is a jumper block located just above the power connector. (See the attached pciture of the jumper blocks.) It has a series of 7 pairs of pins. The jumper was on the same set/pair of pins for both drives. I moved the jumper down one row and that resolved the system crashing error. I assume since there are 7 rows of paired pins that these pins would be the ones to set the SCSI ID for each individual drive. I have installation documentation for adding drives to the internal bay, but there is no mention of setting jumpers on these drives in any documentation I have. I thought the SCSI bus could handle up to 8 drives numbered 0-7, so since this drive only has seven paris of pins, the eighth drive must be configured with no jumper on any row of these pins. There is also another jumper block above the one with 7 rows of paired pins and it had a jumper installed vertically across the two leftmost pins in the two rows. I do not know what that jumper is for. I have tried booting with this jumper off completely on one drive as well as booting with the SCSI jumper on a different set of pins on each drive. In both cases, the system boots and does not crash, but in neither case do either of the two SCSI drives show up in the boot up list, although the drive light on both is working. Only the CD-ROM shows up as a bootable device. When I take the second drive out of the system and restart the system, the first drive then reappears in the boot list and the system will boot fine from it. Am I correct in my assumption about the 7 pairs of pins being the SCSI ID jumper pins? Does it matter the order in which these pins are jumped? As I understand it, it does not matter as long as they are unique on each drive. Do you know what the vertical jumper on the other set of pins is for? Should it be installed at all? On another pair of pins? Installed horizontally like the other jumper? Thanks! Glenn
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