ubuntu/USBメモリ(C801)

USB

メモリの認識 †

A-DATA USBメモリ C801 16GBがとても安かったので購入をした．
購入のままではUbuntuに挿しても認識しなかったので，設定のメモです．

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購入時のログメッセージ †

購入ままでUSBポートに挿したときの/var/log/message内容です．

kernel: [200661.267009] usb 1-5: new high speed USB device using ehci_hcd and address 7
kernel: [200661.748336] usb 1-5: configuration #1 chosen from 1 choice
kernel: [200661.748554] scsi9 : SCSI emulation for USB Mass Storage devices
kernel: [200666.741046] scsi 9:0:0:0: Direct-Access     USB 2.0  USB Flash Drive  0.00 PQ: 0 ANSI: 2
kernel: [200666.742990] sd 9:0:0:0: [sdd] 31588352 512-byte hardware sectors (16173 MB)
kernel: [200666.743649] sd 9:0:0:0: [sdd] Write Protect is off
kernel: [200666.745770] sd 9:0:0:0: [sdd] 31588352 512-byte hardware sectors (16173 MB)
kernel: [200666.746393] sd 9:0:0:0: [sdd] Write Protect is off
kernel: [200666.746407]  sdd: sdd1
kernel: [200666.950823] sd 9:0:0:0: [sdd] Attached SCSI removable disk
kernel: [200666.950881] sd 9:0:0:0: Attached scsi generic sg3 type 0
kernel: [200777.761556] VFS: Can't find a valid FAT filesystem on dev sdd.
kernel: [200787.717581] FAT: Did not find valid FSINFO signature.

とりあえずこのままでもマウントをすることは可能でした．

$ sudo mount -t vfat /dev/sdd1 /media/disk
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フォーマット †

ログの内容からFAT関連でおかしいようなので，フォーマットしてみる．

  • マウントを解除する 
    $ sudo umount /media/disk
  • デバイスをフォーマット 
    $ sudo mkfs.vfat /dev/sdd1

    USBメモリを抜き挿ししてみると，今度は自動的に認識をするようになった．

    kernel: [201843.129693] usb 1-5: USB disconnect, address 7
kernel: [201846.076412] usb 1-5: new high speed USB device using ehci_hcd and address 8
kernel: [201846.555679] usb 1-5: configuration #1 chosen from 1 choice
kernel: [201846.555907] scsi10 : SCSI emulation for USB Mass Storage devices
kernel: [201851.549762] scsi 10:0:0:0: Direct-Access     USB 2.0  USB Flash Drive  0.00 PQ: 0 ANSI: 2
kernel: [201851.551240] sd 10:0:0:0: [sdd] 31588352 512-byte hardware sectors (16173 MB)
kernel: [201851.551865] sd 10:0:0:0: [sdd] Write Protect is off
kernel: [201851.554110] sd 10:0:0:0: [sdd] 31588352 512-byte hardware sectors (16173 MB)
kernel: [201851.554733] sd 10:0:0:0: [sdd] Write Protect is off
kernel: [201851.554748]  sdd: sdd1
kernel: [201851.669540] sd 10:0:0:0: [sdd] Attached SCSI removable disk
kernel: [201851.669599] sd 10:0:0:0: Attached scsi generic sg3 type 0