Thanks Allen,

>> Can't open /dev/rsd1a: Device not configured
>
>This is because your IDE drive shows up as a SCSI drive in the MacOS but
>not under BSD.  You need to change /etc/fstab and replace 'sd1' with 'sd0'.
>

However I can not change /etc/fstab file, because it is not allowed
to open any files to write on my system.
I have checked my /etc/fstab by "cat command" as follows:

cat /etc/fstab
/dev/sd1a     /      ufs    rw 1 1
/dev/sd1b     none   swap   sw 0 0
kern          /kern  kernfs rw 0 0
proc          /proc  procfs rw 0 0


How do I change /etc/fstab ?
The vi editor does not work
 because of the temp file has not been opened for writing.
Does anyone have any ideas ?

Thanks,
Email: garison@ca2.so-net.or.jp