Unable to mount Pendrive
 

Hi All,
I have a RHEL5 machine here and trying to use 2GB pendrive on it. But i am getting error "can't mount device"
How can i make it mountable ?
Is there any way where I can change the settings and use my flashdrive(pendrive) ?

Thank You in advance,
Kapil

Plug in pendrive and then run dmesg from the command line. Give us the last 20 or so lines from the output to determine the problem or how to mount the drive.

If you're not the administrator, you may not be allowed to mount other drives for security reasons.

Flash drives mounting
 

I am not the admin, but i am using root user to mount the drive. I hope, it should resolve this issue.
Otherwise, how can i reinstall the device ?
Our admin is in other office, but i am free to uninstall/reinstall devices. So may be i can do that here..

Thanks for the concern...
Kapil.

If you're root, then you are an administrator on that box. So have you attempted to see what output you have from a dmesg so we can determine what we're working with?

Hi there,

I tried again, but got the same error. I am attaching first 30 lines of the output from 'dmesg' command:
Linux version 2.6.18-53.el5 (brewbuilder@hs20-bc1-7.build.redhat.com) (gcc version 4.1.2 20070626 (Red Hat 4.1.2-14)) #1 SMP Wed Oct 10 16:34:19 EDT 2007
Command line: ro root=LABEL=/ rhgb quiet
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000008f000 (usable)
BIOS-e820: 000000000008f000 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000007e666000 (usable)
BIOS-e820: 000000007e666000 - 000000007e705000 (ACPI NVS)
BIOS-e820: 000000007e705000 - 000000007f595000 (usable)
BIOS-e820: 000000007f595000 - 000000007f59d000 (reserved)
BIOS-e820: 000000007f59d000 - 000000007f62b000 (usable)
BIOS-e820: 000000007f62b000 - 000000007f62f000 (reserved)
BIOS-e820: 000000007f62f000 - 000000007f6a9000 (usable)
BIOS-e820: 000000007f6a9000 - 000000007f6e9000 (ACPI NVS)
BIOS-e820: 000000007f6e9000 - 000000007f6ed000 (usable)
BIOS-e820: 000000007f6ed000 - 000000007f6ff000 (ACPI data)
BIOS-e820: 000000007f6ff000 - 000000007f700000 (usable)
BIOS-e820: 000000007f700000 - 0000000080000000 (reserved)
BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
DMI 2.4 present.
ACPI: RSDP (v000 INTEL ) @ 0x00000000000fe020
ACPI: RSDT (v001 INTEL D945GCR 0x00000011 0x01000013) @ 0x000000007f6fd038
ACPI: FADT (v001 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x000000007f6fc000
ACPI: MADT (v001 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x000000007f6f6000
ACPI: WDDT (v001 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x000000007f6f5000
ACPI: MCFG (v001 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x000000007f6f4000
ACPI: ASF! (v032 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x000000007f6f3000
ACPI: HPET (v001 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x000000007f6f2000
ACPI: SSDT (v001 INTEL CpuPm 0x00000011 MSFT 0x01000013) @ 0x000000007f6f1000
ACPI: SSDT (v001 INTEL Cpu0Ist 0x00000011 MSFT 0x01000013) @ 0x000000007f6f0000
ACPI: SSDT (v001 INTEL Cpu1Ist 0x00000011 MSFT 0x01000013) @ 0x000000007f6ef000
ACPI: SSDT (v001 INTEL Cpu2Ist 0x00000011 MSFT 0x01000013) @ 0x000000007f6ee000
ACPI: SSDT (v001 INTEL Cpu3Ist 0x00000011 MSFT 0x01000013) @ 0x000000007f6ed000
ACPI: DSDT (v001 INTEL D945GCR 0x00000011 MSFT 0x01000013) @ 0x0000000000000000
No NUMA configuration found
Faking a node at 0000000000000000-000000007f700000
Bootmem setup node 0 0000000000000000-000000007f700000
Memory for crash kernel (0x0 to 0x0) notwithin permissible range
disabling kdump
On node 0 totalpages: 513249
DMA zone: 2694 pages, LIFO batch:0
DMA32 zone: 510555 pages, LIFO batch:31
ACPI: PM-Timer IO Port: 0x408
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 6:15 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
Processor #1 6:15 APIC version 20
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x82] disabled)
ACPI: LAPIC (acpi_id[0x04] lapic_id[0x83] disabled)
ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Setting APIC routing to physical flat
ACPI: HPET id: 0x8086a201 base: 0xfed00000
Using ACPI (MADT) for SMP configuration information
Nosave address range: 000000000008f000 - 00000000000a0000
Nosave address range: 00000000000a0000 - 00000000000e0000
Nosave address range: 00000000000e0000 - 0000000000100000
Nosave address range: 000000007e666000 - 000000007e705000
Nosave address range: 000000007f595000 - 000000007f59d000
Nosave address range: 000000007f62b000 - 000000007f62f000
Nosave address range: 000000007f6a9000 - 000000007f6e9000
Nosave address range: 000000007f6ed000 - 000000007f6ff000
Allocating PCI resources starting at 88000000 (gap: 80000000:7ff80000)
SMP: Allowing 4 CPUs, 2 hotplug CPUs
Built 1 zonelists. Total pages: 513249
Kernel command line: ro root=LABEL=/ rhgb quiet
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
Checking aperture...
Memory: 2046948k/2087936k available (2434k kernel code, 39524k reserved, 1235k data, 192k init)
Calibrating delay using timer specific routine.. 4392.15 BogoMIPS (lpj=2196079)
Security Framework v1.0.0 initialized
SELinux: Initializing.
SELinux: Starting in permissive mode
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 2048K
using mwait in idle threads.
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0
CPU0: Thermal monitoring enabled (TM2)
SMP alternatives: switching to UP code
ACPI: Core revision 20060707
Using local APIC timer interrupts.
result 12468782
Detected 12.468 MHz APIC timer.

Do suggest me, if i need to do something else

Thank you,
Kapil.

As trickykid said, post the last 20 or so lines of output (e.g. "dmesg | tail -n 20").

Hi There,
below is the output of the given command :dmesg | tail -n 20

usb 5-5: USB disconnect, address 2
usb 5-5: new high speed USB device using ehci_hcd and address 3
usb 5-5: configuration #1 chosen from 1 choice
scsi3 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
Vendor: JetFlash Model: TS2GJFV30 Rev: 0.00
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sdb: 3964928 512-byte hdwr sectors (2030 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 00 00 00
sdb: assuming drive cache: write through
SCSI device sdb: 3964928 512-byte hdwr sectors (2030 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 00 00 00
sdb: assuming drive cache: write through
sdb: unknown partition table
sd 3:0:0:0: Attached scsi removable disk sdb
sd 3:0:0:0: Attached scsi generic sg1 type 0
usb-storage: device scan complete
[oracle@anthurium ~]$

Thank you,
Kapil.

That appears to be the problem. I take it the device doesn't work on other machines, or does it? :/

I'd have to agree, does this device work elsewhere? Do you have data on it you need to retrieve? If not, format the sucker and start using it already by creating a partition on it then a filesystem.

looks like you have plugged a completely blank keydrive in, or one with a corrupt partition table.

you could try

(tip when you post some output enclose it in [code] and [/code] tags to make it easier to read

Hi There,
The device is working fine with other windows machines. It is not working only with the RHEL machine.
It contains data as well, and it is not blank. It contains the installers for various products, we have here. I think, having data or not, is a matter of concern once the devices got recognized.

Thank You,
Kapil.

Hi There,
The device is working fine with other windows machines. It is not working only with the RHEL machine.
It contains data as well, and it is not blank. It contains the installers for various products, we have here. I think, having data or not in the device, is a matter of concern once the devices got recognized.

Thank You,
Kapil.

Hi There,
The device is working fine with other windows machines. It is not working only with the RHEL machine.
It contains data as well, and it is not blank. It contains the installers for various products, we have here. I think, having data or not, is a matter of concern once the devices got recognized.
If required, then i have to take backup of this data first and then I can format it, but is it essential ??

Thank You,
Kapil.

Sounds to me then you have a pen drive only recognizable by windows. In windows, can you find out how it's formatted? Anything else special about this pen drive, make/model?

I have two pen drives.
One is called Transcend Jetflash which could not be accessed by Mandriva 10.1, Debian Sarge and most Linux of that era and older, but it sometimes could be seen by Mandriva 10.2 and any Linux OS newer than that. But every now and then it disappears from the Linux OSs. The cure would be to boot into Windows (as Windows could always read it) and back up any data and re-format it. Then it would be visible again for a little while by most Linux, but would eventually disappear again and required another format job.
The only difference though, is that when it disappears, nothing shows up when it's plugged in, no error, nothing saying it cannot be mounted, nothing!
My Sandisk Cruiser never had this issue with any Linux OS.