Non posso partizionare né utilizzare un disco USB rimovibile senza file system. Ho ottenuto le seguenti informazioni:
sh-3.2# diskutil info disk2
Device Identifier: disk2
Device Node: /dev/disk2
Whole: Yes
Part of Whole: disk2
Device / Media Name: IC1100 CF
Volume Name: Not applicable (no file system)
Mounted: Not applicable (no file system)
File System: None
Content (IOContent): None
OS Can Be Installed: No
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Total Size: 8.0 GB (7994327040 Bytes) (exactly 15613920 512-Byte-Units)
Volume Free Space: Not applicable (no file system)
Device Block Size: 512 Bytes
Read-Only Media: No
Read-Only Volume: Not applicable (no file system)
Device Location: External
Removable Media: Yes
Media Removal: Software-Activated
Virtual: No
OS 9 Drivers: No
Low Level Format: Not supported
Dopo aver seguito questa guida , ora sono in grado di vedere il disco in Utility Disco, ma non è inizializzato e quando provo a formattarlo, ottengo l'errore Impossibile aprire il dispositivo
EDIT: ho provato quanto segue:
- Utility disco > Cancella
- Terminal >
diskutil eraseDisk MS-DOS NAME disk2
- Terminal >
diskutil eraseVolume MS-DOS NAME disk2
- Terminal > %codice%
Loro TUTTI portano allo stesso errore: Errore: -69877: impossibile aprire il dispositivo
EDIT 2: Questa è la tabella delle partizioni:
sh-3.2# fdisk -e /dev/disk2
fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory
The signature for this MBR is invalid.
Would you like to initialize the partition table? [y] y
Enter 'help' for information
fdisk:*1> p
Disk: /dev/disk2 geometry: 971/255/63 [15613920 sectors]
Offset: 0 Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
EDIT 3: Se scrivo diskutil partitionDisk disk2 1 MBR MS-DOS NAME 7.8GB
, questo viene mostrato:
sh-3.2# fdisk /dev/disk2
Disk: /dev/disk2 geometry: 971/255/63 [15613920 sectors]
Signature: 0xD913
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: D5 843 125 41 - 856 48 15 [3289417632 - 1579849264] <Unknown ID>
2: B0 380 233 63 - 580 252 34 [1433382022 - 2359874114] <Unknown ID>
3: 21 542 173 50 - 368 171 22 [ 805962412 - 2236752874] <Unknown ID>
4: C1 311 233 33 - 417 95 7 [3864719105 - 4292535645] DRDOSs FAT12
Come posso risolvere? Grazie (Sto usando Mac OS X 10.11.3 )