Darle formato a una memoria USB
De NetBSD Mexico
Contenido |
[editar] Identificando la memoria USB
Sólo tienes que checar el dmesg de tu sistema:
# dmesg ... umass0 at uhub4 port 3 configuration 1 interface 0 umass0: Kingston DT 101 II, rev 2.00/1.10, addr 2 umass0: using SCSI over Bulk-Only scsibus0 at umass0: 2 targets, 1 lun per target sd0 at scsibus0 target 0 lun 0: <Kingston, DT 101 II, PMAP> disk removable sd0: 7660 MB, 1922 cyl, 255 head, 32 sec, 512 bytes/sect x 15687680 sectors
[editar] Reiniciando su tabla de particiones
Para borrar la tabla de particiones actual:
# dd if=/dev/zero of=/dev/rsd0d bs=512 count=1 1+0 records in 1+0 records out 512 bytes transferred in 0.265 secs (1932 bytes/sec)
[editar] Crear la nueva partición
Para crear la partición que sea compatible con Windows, Linux y otros BSDs:
# fdisk -u /dev/rsd0d fdisk: primary partition table invalid, no magic in sector 0 Disk: /dev/rsd0d NetBSD disklabel disk geometry: cylinders: 1922, heads: 255, sectors/track: 32 (8160 sectors/cylinder) total sectors: 15687680 BIOS disk geometry: cylinders: 976, heads: 255, sectors/track: 63 (16065 sectors/cylinder) total sectors: 15687680 Do you want to change our idea of what BIOS thinks? [n] n Partition table: 0: <UNUSED> 1: <UNUSED> 2: <UNUSED> 3: <UNUSED> Bootselector disabled. No active partition. Which partition do you want to change?: [none] 0 The data for partition 0 is: <UNUSED> sysid: [0..255 default: 169] 12 start: [0..977cyl default: 63, 0cyl, 0MB] <Enter> size: [0..977cyl default: 15687617, 977cyl, 7660MB] <Enter> bootmenu: [] <Enter> Partition table: 0: Primary DOS with 32 bit FAT - LBA (sysid 12) start 63, size 15687617 (7660 MB, Cyls 0-976/130/50) 1: <UNUSED> 2: <UNUSED> 3: <UNUSED> Bootselector disabled. No active partition. Which partition do you want to change?: [none] <Enter> We haven't written the MBR back to disk yet. This is your last chance. Partition table: 0: Primary DOS with 32 bit FAT - LBA (sysid 12) start 63, size 15687617 (7660 MB, Cyls 0-976/130/50) 1: <UNUSED> 2: <UNUSED> 3: <UNUSED> Bootselector disabled. No active partition. Should we write new partition table? [n] y
NOTA
Lo que esta en negritas son las opciones que escogimos.
[editar] Formatear la partición
Checamos cual es la letra de la partición:
# mbrlabel /dev/rsd0d Found MSDOS partition; size 15687617 (7659 MB), offset 63 adding MSDOS partition to slot a. 5 partitions: # size offset fstype [fsize bsize cpg/sgs] a: 15687617 63 MSDOS # (Cyl. 0*- 1922*) d: 15687680 0 unused 0 0 # (Cyl. 0 - 1922*) e: 15679378 62 MSDOS # (Cyl. 0*- 1921*) Not updating disk label.
En este caso es la letra e.
Formateamos:
# newfs_msdos -F 32 -L EUNICE /dev/rsd0e /dev/rsd0e: 15657064 sectors in 1957133 FAT32 clusters (4096 bytes/cluster) MBR type: 11 bps=512 spc=8 res=32 nft=2 mid=0xf0 spt=32 hds=255 hid=0 bsec=15687680 bspf=15291 rdcl=2 infs=1 bkbs=2
[editar] Usar la memoria
Montamos:
# mount_msdos -o rw -m 777 /dev/sd0e /mnt/usb
Checamos su espacio libre:
# df -h Filesystem Size Used Avail %Cap Mounted on ... /dev/sd0e 7.5G 4.0K 7.5G 0% /mnt/usb
