I’ve a external usb key whose declared size is 16 GB.
Indeed it was, but somehow aver having formatted it (Fat 32) in Windows 7 now on both Windows and Opensuse 13.1 the capacity of the drive results to be just 4 MB.
Since I’m not very fancy with Windows formatting utility (but I tried twice to format it! And the size has remained the same) I gave a try to Linux.
So (following this tutorial How to Mount, Unmount and Format USB pen drive using Terminal in Ubuntu/Linux Mint | It’s All About Linux ) I opened a GNOME terminal did:
su Password: *******************
Disk /dev/sda: 500.1 GB, 500107862016 bytes .............................. (information about Main HDD)] Disk /dev/sdb: 16.0 GB, 16012148736 bytes 64 heads, 32 sectors/track, 15270 cylinders, total 31273728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1bf0d4df Device Boot Start End Blocks Id System /dev/sdb1 4248 12439 4096 1 FAT12 /dev/sdb2 * 12440 9162751 4575156 17 Hidden HPFS/NTFS
What I noticed here is that there are TWO devices (partitions?) associated with my USB key , and infact 1 of them is just 4 MB! (4096 blocks)
/dev/sdb2 * 12440 9162751 4575156 17 Hidden HPFS/NTFS
I tried to run
the output is (the label is “openSUSE-12.3-DVD-x86_640110” because at first I used this usb key to install Opensuse, but I formatted it later):
................................................] /dev/sdb1 on /run/media/manuel/openSUSE-12.3-DVD-x86_640110 type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=100,fmask=0022,dmask=0077,codepage=cp437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2) /dev/sdb1 on /var/run/media/manuel/openSUSE-12.3-DVD-x86_640110 type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=100,fmask=0022,dmask=0077,codepage=cp437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro)
The I UNmounted the drive:
umount /run/media/manuel/openSUSE-12.3-DVD-x86_640110 type vfat
Finally i tried to format /dev/sdb1 , in FAT32 by:
mfks.vfat 188.8.131.52 (12 Sep 2010)
I alsy tried to do mkfs.vfat on /dev/sdb2 as well , the output is the same as the line above, but when I mount the drive again (I just removed and reinserted the usb key to let Linux do it automatically), I still get 1 USB DRIVE only whose capacity is 4 MB (4.2 MB exactly).
Any suggestion is really appreciated.
Thanks very much in advance