I think there is another problem with the line shown by Thierry:
> grubdir_device=`df ${grubdir} | grep /dev/ \
> | sed 's%.*\(/dev/[a-z0-9]*\).*%\1%'`
The sed expression is wrong as it restricts device names to be lowercase
alphanumeric chars. This is a bad assumption. I'd prefer to make
no assumptions at all:
df ${grubdir} | awk '/dev/ {print $1}'
If, however, "$1" looks too generic or awk doesn't look a good tool to
use, the sed expression should return everything up to a space-or-tab,
not only alphanumeric chars. Under some systems devices live under
/dev/dsk. For example when a Linux kernel uses devfs.
df ${grubdir} | grep /dev/ | sed 's%.*\(/dev/[^ ]*\).*%\1%'
(note the space-tab char set).
/alessandro
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