[SunHELP] Wrong?

I'm not familiar with Sol 8, my new box
I've found some scare keyword "onerror=panic" when I did "mount"
command. 
Is there anything wrong on my disk/partition?

# mount
/ on /dev/dsk/c0t0d0s0
read/write/setuid/intr/largefiles/onerror=panic/dev=800078 on Fri Aug 16
14:47:51 2002
/usr on /dev/dsk/c0t8d0s3
read/write/setuid/intr/largefiles/onerror=panic/dev=8000b3 on Fri Aug 16
14:47:51 2002
/proc on /proc read/write/setuid/dev=3a00000 on Fri Aug 16 14:47:50 2002
/dev/fd on fd read/write/setuid/dev=3ac0000 on Fri Aug 16 14:47:52 2002
/etc/mnttab on mnttab read/write/setuid/dev=3bc0000 on Fri Aug 16 14:47:52
2002
/var on /dev/dsk/c0t9d0s4
read/write/setuid/intr/largefiles/onerror=panic/dev=8000bc on Fri Aug 16
14:47:53 2002
/var/run on swap read/write/setuid/dev=1 on Fri Aug 16 14:47:53 2002
/tmp on swap read/write/setuid/dev=2 on Fri Aug 16 14:47:54 2002

# df -k
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/dsk/c0t0d0s0    6638682  139734 6432562     3%    /
/dev/dsk/c0t8d0s3    8705501 1247168 7371278    15%    /usr
/proc                      0       0       0     0%    /proc
fd                         0       0       0     0%    /dev/fd
mnttab                     0       0       0     0%    /etc/mnttab
/dev/dsk/c0t9d0s4    8705501  101446 8517000     2%    /var
swap                 2458872      24 2458848     1%    /var/run
swap                 2458856       8 2458848     1%    /tmp