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Thread: USB - Read-only file system

  1. #1
    Join Date
    Oct 2012
    Beans
    1

    Unhappy USB - Read-only file system

    I have a Buffalo 32GB USB 3.0 flash drive which suddenly became a "Read-only file system".
    Thus, I can't read nor write files onto the USB. When checking permissions I got the following:

    Owner: 99 user #99
    Group: 99

    I tried doing a dmseg and here is what I got for the last few lines:

    Code:
    [ 1251.152296] usb 2-5.4: new high-speed USB device number 11 using ehci_hcd
    [ 1251.245163] usb 2-5.4: New USB device found, idVendor=0411, idProduct=01f2
    [ 1251.245167] usb 2-5.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [ 1251.245170] usb 2-5.4: Product: USB Flash Disk
    [ 1251.245173] usb 2-5.4: Manufacturer: BUFFALO
    [ 1251.245175] usb 2-5.4: SerialNumber: 0916100000F102050700001567
    [ 1251.246678] scsi12 : usb-storage 2-5.4:1.0
    [ 1252.244681] scsi 12:0:0:0: Direct-Access     BUFFALO  USB Flash Disk   1.00 PQ: 0 ANSI: 6
    [ 1252.245355] sd 12:0:0:0: Attached scsi generic sg5 type 0
    [ 1252.247742] sd 12:0:0:0: [sdg] 61526016 512-byte logical blocks: (31.5 GB/29.3 GiB)
    [ 1252.248297] sd 12:0:0:0: [sdg] Write Protect is on
    [ 1252.248301] sd 12:0:0:0: [sdg] Mode Sense: 23 00 80 00
    [ 1252.248871] sd 12:0:0:0: [sdg] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
    [ 1252.259074]  sdg: sdg1 sdg2
    [ 1252.261292] sd 12:0:0:0: [sdg] Attached SCSI removable disk
    [ 1252.559661] hfs: Filesystem was not cleanly unmounted, running fsck.hfsplus is recommended.  mounting read-only.

    ...and here is the output after I did sudo fdisk -l


    Code:
    WARNING: GPT (GUID Partition Table) detected on '/dev/sdg'! The util fdisk doesn't support GPT. Use GNU Parted.
    
    
    Disk /dev/sdg: 31.5 GB, 31501320192 bytes
    255 heads, 63 sectors/track, 3829 cylinders, total 61526016 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: 0x00000000
    
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdg1               1    61526015    30763007+  ee  GPT
    I really don't know what to do from here, can someone please help me out?

    Thanks!

  2. #2
    Join Date
    Jan 2009
    Location
    Santander, Spain
    Beans
    1,751
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: USB - Read-only file system

    Take a look to this link: https://help.ubuntu.com/community/Mo...without_errors, perhaps it can help you.

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