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Fixed (hardisk) device names?


does anyone know how to fix the device name on a debian linux
system? For example. If i have two IDE hardisks, the devices will
be named like this.


If i now must remove the first harddisk (/dev/hda) the second (/dev/hdb)
will be renamed to (/dev/hda) after the reboot. As i want /dev/hdb to be
a mirror of /dev/hda and used as failover disk _without_ opening the
case and tampering with the IDE bus setup, i want linux to keep the name
/dev/hdb for the drive no matter what happens.

Is this possible?

Another question. How can i copy two identical discs _including_ the boot
block? "dd if=/dev/hda of=/dev/hdb" doesnt do it and there are no raw
devices on linux AFAIK.



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