martin@minster.york.ac.uk (10/20/90)
Hello! I am having trouble with the minix at_wini driver on a Viglen Vig III LS clone. Most of the time it is OK, but if I do something like: dd if=/dev/hd3 of=/dev/null bs=30k then the machine will usually hang quite quickly, with the hard disk light perminantly *on*, but with no disk activity at all! The bigger the block size, the more likely the machine is to crash! Also turning off turbo mode seems to make the crash less likely, but does not avoid it altogether. This makes me wonder if there is a timing incompatibility between the at_wini driver and the Western Digital WD1006V-SR2 RLL disk controller. Has anyone seen this problem before, or have any suggestions? To give more details, the machine is a 20MHz 386 clone, and I have duplicated the problem using both Minix 1.5.10, and with Bruce Evan's 32-bit patchs installed. Identical boot floppies work without a problem on a 25MHz 386 box with a WD1006V-MM2 (or at least, did until I installed a SCSI disk last week!) Many thanks in advance! Martin usenet: ...!mcsun!ukc!minster!martin JANET: martin@uk.ac.york.minster INTERNET: martin%minster.york.ac.uk@nsfnet-relay.ac.uk surface: Dr. Martin C. Atkins Dept. of Computer Science University of York Heslington York YO1 5DD ENGLAND
feustel@netcom.UUCP (David Feustel) (10/23/90)
How Interesting! I just took my 386 out of turbo mode and suddenly the AT version of Minix 1.5 doesn't hang when I run FDISK /dev/hd0. I think you've just found my hard disk problem for me. Thanks! -- David Feustel, 1930 Curdes Ave, Fort Wayne, IN 46805, (219) 482-9631