# $NetBSD: LAST_MINUTE,v 1.57 2000/11/29 23:02:02 tv Exp $ This file contains important information on the NetBSD 1.5 release that did not make it into the main documentation. [port-alpha, port-arc, port-cobalt, port-i386, port-macppc] The "pciide" IDE/ATAPI disk driver included with these ports has some problems with Ultra-DMA and certain chipsets, notably SiS controller chips. If you are NOT using the proper 80-wire Ultra-DMA cable (even for UDMA 1-3), and/or you see problems about "lost interrupts" on the pciide driver, you may suffer data corruption problems until Ultra-DMA is disabled in the pciide driver. This can be fixed by creating a kernel configuration file which changes the line: wd* at pciide? channel ? drive ? flags 0x0000 to: wd* at pciide? channel ? drive ? flags 0x0f00 Additionally, on SiS chipsets, you may wish to disable all DMA modes until NetBSD 1.5.1 (or a NetBSD 1.5 source patch) is available to fix this problem properly; otherwise, you may experience silent data corruption without on-screen errors or warnings. On these chipsets, use this configuration line instead: wd* at pciide? channel ? drive ? flags 0x0ff0 [port-mac68k] The experimental sysinstall kernels in mac68k/installation/instkernel are known to be buggy. Especially, if you try to use the menu to edit the partition table on a disk with HFS partitions, and then do a clean install, it's likely to newfs (and destroy) the wrong partition! Note that the "supported" installation procedure, as described in the INSTALL.* documents, doesn't use these kernels. [port-pc532] The release notes for pc532 state that sysinst will be used when booting the installation floppy image. Sysinst is not completely working on pc532 as of NetBSD 1.5; this will be fixed in a future release. In NetBSD 1.5, the installer presented will be the miniroot-based script installer, as in prior releases. [port-pmax] Netbooting DECstation 2100/3100 systems will currently hang during the configuration probe just after "mainbus0 at root". There is currently no binary fix for this, but there is a source patch for compiling kernels in .../NetBSD-1.5/patches/pmax-netboot.diff. After compiling a new kernel with this patch, netbooting 2100 or 3100 systems should work properly.