lanciando il comando che mi hai indicato mi viene restituito il seguente output:
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Model: ATA WDC WD10EARS-00Y (scsi)
Disk /dev/sdb: 1953525168s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 2048s 977000000s 976997953s primary
2 977000448s 1953525167s 976524720s primary ntfs
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mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
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[ 1.419847] md: Waiting for all devices to be available before autodetect
[ 1.419917] md: If you don't use raid, use raid=noautodetect
[ 1.420113] md: Autodetecting RAID arrays.
[ 1.420181] md: Scanned 0 and added 0 devices.
[ 1.420248] md: autorun ...
[ 1.420313] md: ... autorun DONE.
[ 1.448029] EXT3-fs (sda2): error: couldn't mount because of unsupported optional features (240)
[ 1.460164] EXT2-fs (sda2): error: couldn't mount because of unsupported optional features (240)
[ 1.477615] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[ 1.477723] VFS: Mounted root (ext4 filesystem) readonly on device 8:2.
[ 1.505822] devtmpfs: mounted
Edit:
Ieri sera avevo fatto un export dei primi 512 byte dell'HDD con il comando dd in questo modo:
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dd if=/dev/sdb of=mbr.iso bs=512 count=1