External Hard Disk not detected

[nardneran]

Hi,
I'm using F8. I have a 160GB external hard disk. But, it is not detected. Can anyone help me..
The message I get for "dmesg" is this.

usb 1-3: new high speed USB device using ehci_hcd and address 17
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 17
usb 1-3: new high speed USB device using ehci_hcd and address 18
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 18
usb 1-3: new high speed USB device using ehci_hcd and address 19
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 19
usb 1-3: new high speed USB device using ehci_hcd and address 20
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 20
usb 1-3: new high speed USB device using ehci_hcd and address 21
usb 1-3: configuration #1 chosen from 1 choice
device-mapper: multipath: version 1.0.5 loaded
usb 1-3: USB disconnect, address 21
loop: module loaded
usb 1-3: new high speed USB device using ehci_hcd and address 22
usb 1-3: configuration #1 chosen from 1 choice
EXT3 FS on dm-0, internal journal
usb 1-3: USB disconnect, address 22
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda9, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev sda9, type ext3), uses xattr
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev sda5, type vfat), uses genfs_contexts
SELinux: initialized (dev sda6, type vfat), uses genfs_contexts
SELinux: initialized (dev sda7, type vfat), uses genfs_contexts
SELinux: initialized (dev sda8, type vfat), uses genfs_contexts
usb 1-3: new high speed USB device using ehci_hcd and address 23
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 23
Adding 917496k swap on /dev/mapper/VolGroup00-LogVol01. Priority:-1 extents:1 across:917496k
SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts
usb 1-3: new high speed USB device using ehci_hcd and address 24
usb 1-3: configuration #1 chosen from 1 choice
ip6_tables: (C) 2000-2006 Netfilter Core Team
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (7168 buckets, 28672 max)
usb 1-3: USB disconnect, address 24
ip_tables: (C) 2000-2006 Netfilter Core Team
usb 1-3: new high speed USB device using ehci_hcd and address 25
usb 1-3: configuration #1 chosen from 1 choice
Clocksource tsc unstable (delta = -158407907 ns)
ADDRCONF(NETDEV_UP): eth0: link is not ready
usb 1-3: USB disconnect, address 25
usb 1-3: new high speed USB device using ehci_hcd and address 26
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 26
usb 1-3: new high speed USB device using ehci_hcd and address 27
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 27
audit(1210266608.141:4): avc: denied { read write } for pid=2041 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266608.142:5): avc: denied { read write } for pid=2041 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266608.152:6): avc: denied { read write } for pid=2043 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266608.152:7): avc: denied { read write } for pid=2043 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266608.184:8): avc: denied { read write } for pid=2045 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266608.184:9): avc: denied { read write } for pid=2045 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
b44: eth0: Link is up at 100 Mbps, full duplex.
b44: eth0: Flow control is off for TX and off for RX.
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
usb 1-3: new high speed USB device using ehci_hcd and address 28
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 28
usb 1-3: new high speed USB device using ehci_hcd and address 29
usb 1-3: configuration #1 chosen from 1 choice
audit(1210266611.010:10): avc: denied { read write } for pid=2090 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266611.010:11): avc: denied { read write } for pid=2090 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266611.020:12): avc: denied { read write } for pid=2092 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266611.020:13): avc: denied { read write } for pid=2092 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266611.052:14): avc: denied { read write } for pid=2094 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
audit(1210266611.052:15): avc: denied { read write } for pid=2094 comm="consoletype" path="/dev/pts/0" dev=devpts ino=2 scontext=system_u:system_r:consoletype_t:s0 tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
usb 1-3: USB disconnect, address 29
usb 1-3: new high speed USB device using ehci_hcd and address 30
usb 1-3: configuration #1 chosen from 1 choice
audit(1210266612.367:16): audit_pid=2213 old=0 by auid=4294967295 subj=system_u:system_r:auditd_t:s0
usb 1-3: USB disconnect, address 30
usb 1-3: new high speed USB device using ehci_hcd and address 31
usb 1-3: configuration #1 chosen from 1 choice
SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts
usb 1-3: USB disconnect, address 31
usb 1-3: new high speed USB device using ehci_hcd and address 32
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 32
SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
usb 1-3: new high speed USB device using ehci_hcd and address 33
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 33
usb 1-3: new high speed USB device using ehci_hcd and address 34
usb 1-3: configuration #1 chosen from 1 choice
Bluetooth: Core ver 2.11
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP ver 2.8
Bluetooth: L2CAP socket layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM ver 1.8
usb 1-3: USB disconnect, address 34
eth0: no IPv6 routers present
usb 1-3: new high speed USB device using ehci_hcd and address 35
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 35
usb 1-3: new high speed USB device using ehci_hcd and address 36
usb 1-3: configuration #1 chosen from 1 choice
usb 1-3: USB disconnect, address 36

[reader]

I had the same problem at work. One of my two USB disks is not detected on any port. I even brought it home tried on Fedora, Vista, all see it fine. Never thought the cause is actually a bad power supply. Replaced with another power supply, and all is fine. Of course, it does not mean you have the same cause.