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Subject: [2.1.5] swapped a mounted cdrom; now what?
From: Jay Sachs <sachs@interactive.net>
Date: 31 Oct 1996 11:51:18 -0500
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I boneheadedly swapped the freebsd disc in my CD player with an audio
CD while the cdrom was still mounted. Well, now even after replacing
the data CD, I can't:

  unmount it, even w/ "-f"
  remount it

I get the error
   mount_cd9660: /dev/scd0a: Input/output error
on both. (And of course I can't play an audio CD).

Is a reboot the only recourse here?

-jay