This is what I also thought. But how do I turn off write caching on IDE disks. I know how to do on SCSI bit (mode page 8 byte 2 bit 2 clear), but I have absolutely no clue how this can be achieved on IDE disks.
I normally turn off write caching on all drives I install. The drive shouldn't shuffle the carefully sorted file system blocks. Daniel > probably the drive needs write-caching turned off... > > > On Sat, 23 Jan 1999, D. Rock wrote: > > > I have noticed this behaviour on at least one machine. > > If I shutdown the machine with apm power off, the filesystem is dirty and > > has to been checked on the next reboot. It seems, the power is cut too fast. > > I don't have any problems with reboots. > > It seems the drive doesn't have the time to write the superblock back to > > disk. > > > > I simply put a DELAY(4000000) in the apm_power_off() routine and the problem > > fades away. > > Any thoughts on doing this a configurable option? It doesn't break anything, > > it only takes a few seconds longer for the machine to power off. > > > > The drive is a Maxtor Diamond Max (90432D2) 4GB IDE drive in an Asus SP98 > > board. To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
