# Re: Rescan SCSI Bus

From: Remco Blaakmeer (remco-blaakmeer@quicknet.nl)
Date: Sun Oct 15 2000 - 15:46:30 PDT

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  On Thu, 12 Oct 2000, Oliver Rauch wrote:

  > Steffen Vogelreuter wrote:
  > >
  > > My scanner was off during reboot. I wanted my scanner work without another reboot
  > > and I used the echo command from the FAQ but the scanner was detected as sg3
  > > and not as sg2 as he is detected at normal reboot. After that SANE returns "no
  > > devices available" How can I tell the echo to use the scanner as sg2 or SANE to
  > > use sg3.
  >
  > there is no good way to do that,
  >
  > but:
  > 1) this happens more often, change the scsi ID of the scanner (may be you have
  > to swap it with an other device) so that it gets the largest number
  > (eg 6) used by all scsi devices. This way you do not change the order
  > of the devices when the scanner is recogniced after boot.
  >
  > 2) change permission of /dev/sg3 (use the same permissions like /dev/sg2)

  3) Take a look at scsidev. On Debian GNU/Linux systems, it's in the
  scsitools package. See also http://www.garloff.de/kurt/linux/scsidev/

  Remco

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