Παιδιά μετά από αφαίρεση ενός USB flash stick (χωρίς αποπροσάρτηση δυστυχώς

Μήπως μπορεί κάποιος να βοηθήσει?
#blkid // δες ο δισκος σε ποιο partition ειναι,εστω οτι ειναι sdb1
#mkdir /media/extdisk //οπου extdisk βαζεις οτι ονομα θελεις
#mount /dev/sdb1 /media/extdisk
tsiralex@tsiralex-desktop:~$ mkdir /media/extdisk
mkdir: αδύνατη η δημιουργία καταλόγου «/media/extdisk»: Permission denied
tsiralex@tsiralex-desktop:~$
tsiralex@tsiralex-desktop:~$ sudo fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000ba416
Device Boot Start End Blocks Id System
/dev/sda1 * 1 59322 476498944 83 Linux
/dev/sda2 59322 60802 11885569 5 Extended
/dev/sda5 59322 60802 11885568 82 Linux swap / Solaris
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe85edbe8
Device Boot Start End Blocks Id System
/dev/sdb1 1 60802 488383488 7 HPFS/NTFS
Disk /dev/sdg: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000bccf8
Device Boot Start End Blocks Id System
/dev/sdg1 1 60801 488384001 7 HPFS/NTFS
tsiralex@tsiralex-desktop:~$
$sudo -i
#mkdir /media/extdisk
#mount /dev/sdg1 /media/extdisk
#ls /media/extdisk
root@tsiralex-desktop:~# mount /dev/sdg1 /media/extdisk
Incomplete multi-sector transfer: magic: 0x58444e49 size: 4096 usa_ofs: 40 usa_count: 6 data: 0 usn: 5788: Input/output error