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Thread: Cannot create partition: "Unable to read /dev/sdd"

  1. #1
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    Cannot create partition: "Unable to read /dev/sdd"

    I connected a new internal HDD to my headless ubuntu server and would like to partition it so I can copy my existing system disk to it (the existing disk is way low on free space and the new disk is larger.)

    The disk shows in /dev/sdd (there is not sdd1 or any partitions showing). Yet the new disk does not show up using fdisk -l and attempts to mount keep referring to fstab.

    Code:
    tom@HouseMedia:/$ mount /dev/sdd
    mount: can't find /dev/sdd in /etc/fstab or /etc/mtab
    tom@HouseMedia:/$ mount /dev/sdd1
    mount: can't find /dev/sdd1 in /etc/fstab or /etc/mtab
    I had previously mounted and partition this drive but after using dd to restore a disk image of my existing system disk, the new disk was still empty. I'm a little lost on what exactly is wrong and would appreciate some help on getting back to square one again!

  2. #2
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    Quote Originally Posted by antiartist View Post
    I connected a new internal HDD to my headless ubuntu server and would like to partition it so I can copy my existing system disk to it (the existing disk is way low on free space and the new disk is larger.)

    The disk shows in /dev/sdd (there is not sdd1 or any partitions showing). Yet the new disk does not show up using fdisk -l and attempts to mount keep referring to fstab.

    Code:
    tom@HouseMedia:/$ mount /dev/sdd
    mount: can't find /dev/sdd in /etc/fstab or /etc/mtab
    tom@HouseMedia:/$ mount /dev/sdd1
    mount: can't find /dev/sdd1 in /etc/fstab or /etc/mtab
    I had previously mounted and partition this drive but after using dd to restore a disk image of my existing system disk, the new disk was still empty. I'm a little lost on what exactly is wrong and would appreciate some help on getting back to square one again!
    You need to partition the new disk (fdisk and mk2fs) before you can mount it. If the disk is larger than 2GB then you will need to use parted (gparted) to partition the disk.

    In any event you mount partitions (sdd1) not disks (sdd).
    -BAB1

  3. #3
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    Quote Originally Posted by bab1 View Post
    You need to partition the new disk (fdisk and mk2fs) before you can mount it. If the disk is larger than 2GB then you will need to use parted (gparted) to partition the disk.

    In any event you mount partitions (sdd1) not disks (sdd).
    Thanks for the clarification about what I'm mounting (partitions, not disks). I get confused

    Using fdisk to create the partitions isn't working...
    Code:
    tom@HouseMedia:~$ sudo fdisk /dev/sdd
    [sudo] password for tom:
    
    Unable to read /dev/sdd
    tom@HouseMedia:~$
    Both disks are less than 2 TB (which is what I assume you meant, not 2 GB).

  4. #4
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    Quote Originally Posted by antiartist View Post
    Thanks for the clarification about what I'm mounting (partitions, not disks). I get confused

    Using fdisk to create the partitions isn't working...
    Code:
    tom@HouseMedia:~$ sudo fdisk /dev/sdd
    [sudo] password for tom:
    
    Unable to read /dev/sdd
    tom@HouseMedia:~$
    Both disks are less than 2 TB (which is what I assume you meant, not 2 GB).
    Yes I meant 2TB.

    Post the output of
    Code:
    sudo fdisk -l
    -BAB1

  5. #5
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    The disk doesn't show in fdisk -l

    Code:
    tom@HouseMedia:~$ sudo fdisk -l
    
    Disk /dev/sda: 10.3 GB, 10254827520 bytes
    255 heads, 63 sectors/track, 1246 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00018313
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1        1188     9537536   83  Linux
    /dev/sda2            1188        1247      474113    5  Extended
    /dev/sda5            1188        1247      474112   82  Linux swap / Solaris
    
    Disk /dev/sdb: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x0005f5c2
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb1               1       38913   312568641    7  HPFS/NTFS
    
    Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes
    255 heads, 63 sectors/track, 182401 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x3e6caab7
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdc1               1      182401  1465136001    7  HPFS/NTFS
    tom@HouseMedia:~$

  6. #6
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    Quote Originally Posted by antiartist View Post
    The disk doesn't show in fdisk -l

    Code:
    tom@HouseMedia:~$ sudo fdisk -l
    
    Disk /dev/sda: 10.3 GB, 10254827520 bytes
    255 heads, 63 sectors/track, 1246 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00018313
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1        1188     9537536   83  Linux
    /dev/sda2            1188        1247      474113    5  Extended
    /dev/sda5            1188        1247      474112   82  Linux swap / Solaris
    
    Disk /dev/sdb: 320.1 GB, 320072933376 bytes
    255 heads, 63 sectors/track, 38913 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x0005f5c2
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb1               1       38913   312568641    7  HPFS/NTFS
    
    Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes
    255 heads, 63 sectors/track, 182401 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x3e6caab7
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdc1               1      182401  1465136001    7  HPFS/NTFS
    tom@HouseMedia:~$
    If it can't see it it can't partition it. How is the HDD attached (internal, USB or eSATA)? If it is USB then what do you get with
    Code:
    lsusb
    Edit: What do you get if with this
    Code:
    sudo lshw
    -BAB1

  7. #7
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    it's currently attached via USB but once this is all finished, I intend to connect it internally.

    Aaaaand, I have no idea which one of these entries is the disk. The Seagate entry is another external usb disk that is connected. I'm not sure what the Lite-on entry would be as the new disk I am attempting to make use of is made by Hitachi. thoughts?

    Code:
    tom@HouseMedia:~$ lsusb
    Bus 002 Device 002: ID 04ca:002a Lite-On Technology Corp.
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 006: ID 152d:2338 JMicron Technology Corp. / JMicron USA Technology Corp. JM20337 Hi-Speed USB to SATA & PATA Combo Bridge
    Bus 001 Device 005: ID 058f:6377 Alcor Micro Corp. Multimedia Card Reader
    Bus 001 Device 002: ID 0bc2:3300 Seagate RSS LLC
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    tom@HouseMedia:~$
    Using "sudo lshw" returned a lot of stuff. I'm pretty sure the top portion of the output was cut off but here's what was left visible:

    Code:
    ���������<�}���}���� modified=2012-09-03 00:08:40 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,barrier=1,data=ordered mounted=2012-10-04 23:31:13 state=mounted
               *-volume:1
                    description: Extended partition
                    physical id: 2
                    bus info: scsi@0:0.0.0,2
                    logical name: /dev/sda2
                    size: 463MiB
                    capacity: 463MiB
                    capabilities: primary extended partitioned partitioned:extended
                  *-logicalvolume
                       description: Linux swap / Solaris partition
                       physical id: 5
                       logical name: /dev/sda5
                       capacity: 463MiB
                       capabilities: nofs
            *-disk:1
                 description: ATA Disk
                 product: ST3320820A
                 vendor: Seagate
                 physical id: 0.1.0
                 bus info: scsi@0:0.1.0
                 logical name: /dev/sdb
                 version: 3.AA
                 serial: 5QF1VYTG
                 size: 298GiB (320GB)
                 capabilities: partitioned partitioned:dos
                 configuration: ansiversion=5 signature=0005f5c2
               *-volume
                    description: EXT3 volume
                    vendor: Linux
                    physical id: 1
                    bus info: scsi@0:0.1.0,1
                    logical name: /dev/sdb1
                    logical name: /mediastorage
                    version: 1.0
                    serial: 26bc4db0-3e1f-4e7c-af3a-de0351fa35b1
                    size: 298GiB
                    capacity: 298GiB
                    capabilities: primary journaled extended_attributes large_files recover ext3 ext2 initialized
                    configuration: created=2011-02-13 14:37:08 filesystem=ext3 modified=2012-10-04 23:31:13 mount.fstype=ext3 mount.options=rw,nosuid,nodev,noexec,relatime,errors=continue,data=ordered mounted=2012-10-04 23:31:13 state=mounted
         *-bridge
              description: Ethernet interface
              product: MCP61 Ethernet
              vendor: nVidia Corporation
              physical id: 7
              bus info: pci@0000:00:07.0
              logical name: eth1
              version: a2
              serial: 00:1b:b9:55:a8:86
              size: 100000000
              capacity: 100000000
              width: 32 bits
              clock: 66MHz
              capabilities: bridge pm msi ht bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
              configuration: autonegotiation=on broadcast=yes driver=forcedeth driverversion=0.64 duplex=full ip=192.168.0.111 latency=0 link=yes maxlatency=20 mingnt=1 multicast=yes port=MII speed=100MB/s
              resources: irq:27 memory:fe02d000-fe02dfff ioport:ec00(size=8)
         *-ide:1
              description: IDE interface
              product: MCP61 SATA Controller
              vendor: nVidia Corporation
              physical id: 8
              bus info: pci@0000:00:08.0
              logical name: scsi5
              version: a2
              width: 32 bits
              clock: 66MHz
              capabilities: ide pm msi ht bus_master cap_list emulated
              configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3
              resources: irq:23 ioport:9f0(size=8) ioport:bf0(size=4) ioport:970(size=8) ioport:b70(size=4) ioport:d800(size=16) memory:fe02c000-fe02cfff
            *-cdrom
                 description: DVD-RAM writer
                 product: DVDRRW GSA-H30L
                 vendor: HL-DT-ST
                 physical id: 0.0.0
                 bus info: scsi@5:0.0.0
                 logical name: /dev/cdrom
                 logical name: /dev/cdrw
                 logical name: /dev/dvd
                 logical name: /dev/dvdrw
                 logical name: /dev/scd0
                 logical name: /dev/sr0
                 version: S755
                 serial: [HL-DT-STDVDRRW GSA-H30L S75506/12/26��������
                 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
                 configuration: ansiversion=5 status=nodisc
         *-pci:1
              description: PCI bridge
              product: MCP61 PCI Express bridge
              vendor: nVidia Corporation
              physical id: 9
              bus info: pci@0000:00:09.0
              version: a2
              width: 32 bits
              clock: 33MHz
              capabilities: pci pm msi ht pciexpress bus_master cap_list
              configuration: driver=pcieport
              resources: irq:24 ioport:b000(size=4096) memory:fde00000-fdefffff ioport:fdd00000(size=1048576)
         *-pci:2
              description: PCI bridge
              product: MCP61 PCI Express bridge
              vendor: nVidia Corporation
              physical id: b
              bus info: pci@0000:00:0b.0
              version: a2
              width: 32 bits
              clock: 33MHz
              capabilities: pci pm msi ht pciexpress bus_master cap_list
              configuration: driver=pcieport
              resources: irq:25 ioport:a000(size=4096) memory:fdc00000-fdcfffff ioport:fdb00000(size=1048576)
         *-pci:3
              description: PCI bridge
              product: MCP61 PCI Express bridge
              vendor: nVidia Corporation
              physical id: c
              bus info: pci@0000:00:0c.0
              version: a2
              width: 32 bits
              clock: 33MHz
              capabilities: pci pm msi ht pciexpress bus_master cap_list
              configuration: driver=pcieport
              resources: irq:26 ioport:9000(size=4096) memory:fda00000-fdafffff ioport:fd900000(size=1048576)
         *-display
              description: VGA compatible controller
              product: C61 [GeForce 6150SE nForce 430]
              vendor: nVidia Corporation
              physical id: 10
              bus info: pci@0000:00:0d.0
              version: a2
              width: 64 bits
              clock: 66MHz
              capabilities: pm msi bus_master cap_list rom
              configuration: driver=nouveau latency=0
              resources: irq:22 memory:fb000000-fbffffff memory:e0000000-efffffff(prefetchable) memory:fc000000-fcffffff memory:80000000-8001ffff(prefetchable)
         *-pci:4
              description: Host bridge
              product: K8 [Athlon64/Opteron] HyperTransport Technology Configuration
              vendor: Advanced Micro Devices [AMD]
              physical id: 100
              bus info: pci@0000:00:18.0
              version: 00
              width: 32 bits
              clock: 33MHz
         *-pci:5
              description: Host bridge
              product: K8 [Athlon64/Opteron] Address Map
              vendor: Advanced Micro Devices [AMD]
              physical id: 101
              bus info: pci@0000:00:18.1
              version: 00
              width: 32 bits
              clock: 33MHz
         *-pci:6
              description: Host bridge
              product: K8 [Athlon64/Opteron] DRAM Controller
              vendor: Advanced Micro Devices [AMD]
              physical id: 102
              bus info: pci@0000:00:18.2
              version: 00
              width: 32 bits
              clock: 33MHz
         *-pci:7
              description: Host bridge
              product: K8 [Athlon64/Opteron] Miscellaneous Control
              vendor: Advanced Micro Devices [AMD]
              physical id: 103
              bus info: pci@0000:00:18.3
              version: 00
              width: 32 bits
              clock: 33MHz
              configuration: driver=k8temp
              resources: irq:0
         *-scsi:0
              physical id: 11
              bus info: usb@1:1
              logical name: scsi2
              capabilities: emulated scsi-host
              configuration: driver=usb-storage
            *-disk
                 description: SCSI Disk
                 product: Desktop
                 vendor: Seagate
                 physical id: 0.0.0
                 bus info: scsi@2:0.0.0
                 logical name: /dev/sdc
                 version: 0130
                 serial: 2GHN6GFL
                 size: 1397GiB (1500GB)
                 capabilities: partitioned partitioned:dos
                 configuration: ansiversion=4 signature=3e6caab7
               *-volume
                    description: Windows FAT volume
                    vendor: mkdosfs
                    physical id: 1
                    bus info: scsi@2:0.0.0,1
                    logical name: /dev/sdc1
                    logical name: /mediastorage2
                    version: FAT32
                    serial: 228f-2d10
                    size: 1397GiB
                    capacity: 1397GiB
                    capabilities: primary fat initialized
                    configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=rw,nosuid,nodev,noexec,relatime,uid=1000,gid=1000,fmask=0000,dmask=0000,allow_utime=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro state=mounted
         *-scsi:1
              physical id: 12
              bus info: usb@1:6
              logical name: scsi7
              capabilities: emulated scsi-host
              configuration: driver=usb-storage
            *-disk
                 description: SCSI Disk
                 physical id: 0.0.0
                 bus info: scsi@7:0.0.0
                 logical name: /dev/sdd
         *-scsi:2
              physical id: 13
              bus info: usb@1:9
              logical name: scsi6
              capabilities: emulated scsi-host
              configuration: driver=usb-storage
            *-disk:0
                 description: SCSI Disk
                 physical id: 0.0.0
                 bus info: scsi@6:0.0.0
                 logical name: /dev/sde
            *-disk:1
                 description: SCSI Disk
                 physical id: 0.0.1
                 bus info: scsi@6:0.0.1
                 logical name: /dev/sdf
            *-disk:2
                 description: SCSI Disk
                 physical id: 0.0.2
                 bus info: scsi@6:0.0.2
                 logical name: /dev/sdg
            *-disk:3
                 description: SCSI Disk
                 physical id: 0.0.3
                 bus info: scsi@6:0.0.3
                 logical name: /dev/sdh
    Last edited by antiartist; October 7th, 2012 at 07:57 AM.

  8. #8
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    Quote Originally Posted by antiartist View Post
    it's currently attached via USB but once this is all finished, I intend to connect it internally.

    Aaaaand, I have no idea which one of these entries is the disk. The Seagate entry is another external usb disk that is connected. I'm not sure what the Lite-on entry would be as the new disk I am attempting to make use of is made by Hitachi. thoughts?
    I assume you are using Ubuntu 12.04 and that the udev daemon didn't enumerate the Hitachi disk when you plugged it in. I would reboot the system and see what you get with lsusb again. To see all the output of sudo lshw you dump it to a file in your home dir like this
    Code:
    sudo lshw > hardware.txt
    ...then you can look for the Hitachi disk in the file.

    Edit: I found it in the hardware file
    Code:
     *-scsi:1
              physical id: 12
              bus info: usb@1:6
              logical name: scsi7
              capabilities: emulated scsi-host
              configuration: driver=usb-storage
            *-disk
                 description: SCSI Disk
                 physical id: 0.0.0
                 bus info: scsi@7:0.0.0
                 logical name: /dev/sdd
    ... this means the HDD driver is loaded up and the drive should be seen by udev.
    Last edited by bab1; October 7th, 2012 at 08:25 AM. Reason: Updates
    -BAB1

  9. #9
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    restarted the server and made the output again, just to be sure.

    I see the /sdd device in the output as well but I'm not sure what to do from here. Interesting, there is also /sde /sdf /sdg as well...which seems wrong. I don't have that many disks attached.
    Attached Files Attached Files
    Last edited by antiartist; October 8th, 2012 at 06:50 AM. Reason: removed txt file contents from post so as to not be annoying

  10. #10
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    Re: Cannot create partition: "Unable to read /dev/sdd"

    Quote Originally Posted by antiartist View Post
    restarted the server and made the output again, just to be sure.

    I see the /sdd device in the output as well but I'm not sure what to do from here. Interesting, there is also /sde /sdf /sdg as well...which seems wrong. I don't have that many disks attached.
    ]
    First things first -- Don't post such a long file directly to the thread. Attach it to the post. It's easier for folks that are just reading the thread. Short amounts of data should be posted between the brackets using the # icon at the top of the editor.

    Do you see the disk using
    Code:
    sudo fdisk -l
    What do you get with this
    Code:
    sudo blkid
    Last edited by bab1; October 8th, 2012 at 02:17 AM. Reason: Typo
    -BAB1

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