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From: "PsYxAkIaS (FreeBSD)" <freebsd@psyxakias.com>
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Date: Sat, 11 Oct 2003 00:29:55 +0300
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Subject: Harddisk Problem
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Hello,

We just installed and mounted a 2nd HDD(secondary ide channel) on a =
Dedicated Server on FreeBSD 4.8 and look what it gives:

] df=20
Filesystem 1K-blocks   Used  Avail Capacity Mounted on
/dev/ad0s1a  2015918  52114 1802532   3%  /
/dev/ad0s1f 22479870 16924774 3756708  82%  /usr
/dev/ad0s1e  4031950  73418 3635976   2%  /var
procfs       4    4    0  100%  /proc
/dev/ad2s1e 76958474    4 70801794   0%  /drive2

] df -h
Filesystem  Size  Used Avail Capacity Mounted on
/dev/ad0s1a  1.9G  51M  1.7G   3%  /
/dev/ad0s1f  21G  16G  3.6G  82%  /usr
/dev/ad0s1e  3.8G  72M  3.5G   2%  /var
procfs    4.0K  4.0K   0B  100%  /proc
/dev/ad2s1e  73G  4.0K  68G   0%  /drive2

] cat /etc/fstab
# See the fstab(5) manual page for important information on automatic =
mounts
# of network filesystems before modifying this file.
#
# Device                Mountpoint      FStype  Options         Dump    =
Pass#
/dev/ad0s1b             none            swap    sw              0       =
0
/dev/ad0s1a             /               ufs     rw              1       =
1
/dev/ad0s1f             /usr            ufs     rw              2       =
2
/dev/ad0s1e             /var            ufs     rw              2       =
2
/dev/acd0c              /cdrom          cd9660  ro,noauto       0       =
0
proc                    /proc           procfs  rw              0       =
0
/dev/ad2s1e             /drive2         ufs     rw              2       =
2

The problem is that from 73GB (80gb hdd) it only sees free 68GB.

How can i check if it has bad sectors? A friend suggested me low-level =
format but I never done that before under unix.

Also, do i need to be in single-user (I dont have physical access, only =
remote root via ssh).


Thank you.