On Wednesday 23 January 2002 23:07, Wakko Warner wrote:
> > This question is more about hardware, but is also related to Linux.
> > If I have a harddisk, plugged into the motherboard (IDE cable and power),
> > can I turn it off, plugging out first power cable, then IDE cable.
> > Can it harm harddisk or motherboard?
> > If I can do it, then will Linux detect it back, if I make this
> > operation back: i.e. plug IDE cable, then power cable.
>
> I've read what everyone else has said about this. The one guy talking
> about the pins and power has some good points. For me, I've always yanked
> the ide cable before the power and made sure the drive was powered and
> spinning before applying the ide cable. I have a machine at work dedicated
> for this kind of thing.
>
> anyway, from the linux side, as others have said, make sure it's unmounted.
> On my dedicated box at work, it's nfs mounted and the ide driver is a
> module. I'm always sure to remove the modules before removing the disk.
>
> When compiled in, it's trickier. the source to hdparm has a script in the
> contrib directory that allows you to turn off and back on an ide
> controller. It won't do that if the disk is currently in use. You have to
> do this before it will find another drive (ideally, turning off that
> channel, swapping drive, turning back on) I've used this on my laptop that
> has a hotswap cdrom.
Maybe ask it to spin down before cutting the power will be even better?
Also the cable issues are not a problem if you have a controller meant for
hotplugging (IDE RAID-controllers)
-Allan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Jan 31 2002 - 21:00:19 EST