brett@rtech.rtech.com (Brett Taylor) (06/24/88)
Subject: External disk drives Newsgroups: comp.unix.aux I wonder if someone is having similar symptoms I am having with external hard drives while running A/UX. I have a Mac II with A/UX on an 80Mb internal drive. I also have 3 external 80Mb drives, we needed disk space and required all Apple hardware. The drives are addressed c1d0s2, c2d0s2 and c3d0s2. I have double checked all cabling and termination. After running several combinations of disk intensive programs I have found the following. Drive 2 has a bad block around 60000. The disk intensive programs access all drives randomly. Reading the bad block on drive 2 reliably hangs the first drive in the SCSI chain. I have rotated the disk around to verify the first in the chain always hangs. The system prints the following error messages: Disk c2d0s2 Error: Protocol Error Processing SCSI request generic disk c2d0s2 Error: Logical block 60430, physical block 60446 SCSI reset After this message the system is hung and the drive light remains on. Pressing the furthest reset button gives me the following: Minimal Unix Debugger sr = 2000 pc = 10007450 d0 - d7 8 7 64 8 2000 0 0 a0 - a7 0 120002AA 10007300 120003000 50010000 0 11005140 1FF01D4E Can anyone shed some light on this? I am in the process of repairing the bad block with several custom utilities. Basically read and write the block, assuming it is ECC and the write succeeds. If that works I can at least continue for now. Sorry no trailer file. return address, sun!rtech!brett