Difference between revisions of "USB storage devices (Italiano)"

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(Mounting USB memory)
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'''Note:''' If you get an error message "Error org.freedesktop.DBus.Error.AccessDenied.", try adding your user account to the 'storage' group.
 
'''Note:''' If you get an error message "Error org.freedesktop.DBus.Error.AccessDenied.", try adding your user account to the 'storage' group.
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<pre>
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# gpasswd -a nomeutente storage
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</pre>
  
 
==Repartitioning the USB memory==
 
==Repartitioning the USB memory==

Revision as of 12:56, 11 August 2008

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Notes: please use the first argument of the template to provide more detailed indications. (Discuss in Talk:USB storage devices (Italiano)#)
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Questo documento mostra come utilizzare le memory stick USB con Linux. In ogni caso, funziona anche per altre periferiche, come le macchine digitali che agiscono come se fossero periferiche di archiviazione USB

Scaricare un Kernel che supporti l'usb storage

Se non utilizzate un kernel realizzato ad-hox da voi stessti, avete già tutto l'occorrente poichè i kernel standard di Arch Linux sono già correttamente configurati. Se invece utilizzate un vostro kernel, assicuratevi che sia stato compilato con il supporto SCSI, SCSI-Disk-Support e usb_storage. Se usate l'ultima versione di udev, sarà necessario solamente collegare la periferica alla porta USB, e il sistema caricherà automaticamente tutti i moduli del kernel necessari. Le versioni più vecchie di udev potrebbero necessitare anche dell'installazione di hotplug o in alternativa, potreste caricare manualmente il modulo:

# modprobe usb-storage
# modprobe sd_mod      (solo per kernel non-SCSI)

Mounting USB memory

After inserting the stick you can mount the device as root with

# mount -t vfat /dev/sda1 /mnt/usbstick

Note: /dev/sda1 is variable. If your hard drive is assigned to /dev/sda1, you'll probably use /dev/sdb1 instead. To find out for sure where your USB device is, search dmesg for /dev/sd*. Use lsusb to verify that your USB device is indeed recognized by the system, if there is an error.

The -t flag specifies the filesystem type. If the device is formatted as fat32 then use the vfat parameter. By default an sdx device is assumed to be formated as fat32, so this option may be omitted.

Note: the directory you mount the stick into must exist before you issue the mount command.

If you use KDE or GNOME, they should show you the inserted device right on your desktop so you don't need to mount it manually.

Note: If you get an error message "Error org.freedesktop.DBus.Error.AccessDenied.", try adding your user account to the 'storage' group.

# gpasswd -a nomeutente storage

Repartitioning the USB memory

Sometimes the stick is separated in up to four partitions, and Linux can't read anything. To fix this you have to repartition the stick with fdisk. Make sure that there are no files left on the stick (if you used it before in Windows, Mac OS or anywhere else). Type:

# modprobe usb_storage
# fdisk /dev/sda

Delete all available partitions (d and partition number), create a new partition with n (I would suggest you use a single partition), press q to write everything and quit.

Create a filesystem on the stick:

# mkfs.vfat /dev/sda1

If you do not have mkfs.vfat on your system then use pacman to install dosfstools:

# pacman -Sy dosfstools

Now you can mount or unmount it as mentioned above.

Montare una penna USB come utente normale

Se desiderate che i normali utenti non-root siano abilitati a montare delle penne USB, aggiungete la seguente riga al file /etc/fstab:

/dev/sda1 /mnt/usbstick vfat noauto,user 0 0

potete sostituire /mnt/usbstick con la cartella che preferite.