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Linuxhelp _ Hardware Support _ Cant mount usb hard drive

Posted by: kaliguy42 Oct 25 2012, 07:17 PM

I have an Iomega usb hard drive that I accidentally formatted to read only.Right now it wont mount anymore.So I need to know,first,how to get it to mount again and then change it to read and write.

Os Linux mint 13 / Ubuntu 12.10

Hard drive Iomega usb 250gb

Posted by: michaelk Oct 27 2012, 02:37 PM

Can you post the model number? I could not find any information on the internet about how to format as read only.
When you plug the drive in look at the output of the dmesg command. Post any errors related to the USB drive.

Posted by: kaliguy42 Oct 27 2012, 04:07 PM

model # LDHD250-U ,it wont let me post the output file for you,says its too long.

Posted by: michaelk Oct 28 2012, 10:38 AM

You do not need to post the entire output just the last messages that pertain to the drive.

dmesg | grep sdb (Replace sdb with the real device ID if known)

Posted by: kaliguy42 Oct 28 2012, 01:04 PM

[ 43.136095] usb 1-6: new high-speed USB device number 5 using ehci_hcd
[ 43.269883] scsi7 : usb-storage 1-6:1.0
[ 64.976053] usb 1-6: reset high-speed USB device number 5 using ehci_hcd
[ 75.220044] usb 1-6: reset high-speed USB device number 5 using ehci_hcd
[ 80.464046] usb 1-6: reset high-speed USB device number 5 using ehci_hcd
[ 90.708069] usb 1-6: reset high-speed USB device number 5 using ehci_hcd
[ 90.840926] scsi 7:0:0:0: Device offlined - not ready after error recovery
[ 5154.084201] attempt to access beyond end of device
[ 5154.084208] sdb2: rw=0, want=4, limit=2
[ 5154.084216] EXT3-fs (sdb2): error: unable to read superblock
[ 5154.100319] attempt to access beyond end of device
[ 5154.100326] sdb2: rw=0, want=4, limit=2
[ 5154.100334] EXT4-fs (sdb2): unable to read superblock


I think this is it.

Posted by: michaelk Oct 28 2012, 02:54 PM

How did you reformat the device?
It looks like no file system can be found?

Posted by: kaliguy42 Oct 28 2012, 06:58 PM

Using the disk utility and I accidentally made it read only.

Posted by: michaelk Oct 28 2012, 07:41 PM

What disk utility?

Posted by: kaliguy42 Oct 28 2012, 09:53 PM

The one that comes with mint,its just called disk utility.

Posted by: michaelk Oct 29 2012, 10:13 AM

Post the output of the command (as root or via sudo)
fdisk -l /dev/sdb
and
file -s /dev/sdb2

Posted by: kaliguy42 Oct 29 2012, 10:37 AM

fdisk -l /dev/sdb

Disk /dev/sdb: 400.1 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 cylinders, total 781422768 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00043918

Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 777754623 388876288 83 Linux
/dev/sdb2 777756670 781422591 1832961 5 Extended
/dev/sdb5 777756672 781422591 1832960 82 Linux swap / Solaris



file -s /dev/sdb2
/dev/sdb2: x86 boot sector; partition 1: ID=0x82, starthead 254, startsector 2, 3665920 sectors, code offset 0x94

Posted by: michaelk Oct 29 2012, 12:12 PM

Looks like sdb is not the correct drive. Post the output from
fdisk -l

Posted by: kaliguy42 Oct 29 2012, 07:38 PM

fdisk -l

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c6d17

Device Boot Start End Blocks Id System
/dev/sda1 * 63 312576704 156288321 7 HPFS/NTFS/exFAT

Disk /dev/sdb: 400.1 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 cylinders, total 781422768 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00043918

Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 777754623 388876288 83 Linux
/dev/sdb2 777756670 781422591 1832961 5 Extended
/dev/sdb5 777756672 781422591 1832960 82 Linux swap / Solaris

Disk /dev/mapper/cryptswap1: 1876 MB, 1876951040 bytes
255 heads, 63 sectors/track, 228 cylinders, total 3665920 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6f3fd572

Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table


It doesnt seem to show up.The last time it mounted it was under sdc1 but it doesnt show there anymore.

Posted by: kaliguy42 Nov 5 2012, 02:23 PM

I took the drive out of the usb and hooked it to the mobo and it still wont load.So i put another drive from another pc in the usb and it booted fine.It seems the iomega drive has died,rip,pos.

Posted by: michaelk Nov 5 2012, 03:04 PM

Thanks for posting back the status.


Posted by: jiruska Apr 28 2016, 10:21 AM

QUOTE (kaliguy42 @ Oct 25 2012, 07:17 PM) *
I have an Iomega usb hard drive that I accidentally formatted to read only.Right now it wont mount anymore.So I need to know,first,how to get it to mount again and then change it to read and write.

Os Linux mint 13 / Ubuntu 12.10

Hard drive Iomega usb 250gb

use yumi that can be free downloaded from pendrivelinux.com

Posted by: michaelk Apr 28 2016, 11:46 AM

jiruska,
Welcome to linuxhelp

I am not opposed adding up to date information on an old thread but in this case not so much. yumi is a windows program to create a USB flash drive that can boot multiple operating systems. It will not repair broken hard drives.

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