Re: External drive partitioning problems

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Le 11/12/2011 19:25, Robert Moskowitz a écrit :
> On 12/11/2011 01:15 PM, Reindl Harald wrote:
>> Am 11.12.2011 19:12, schrieb Robert Moskowitz:
>>> I just got a LaCie 1Tb USB drive.  I want to delete their 10Mb NTFS
>>> partition then create one 1Tb EXT4 partition.
>>>
>>> When I DiskUtility I get the following error when I try to delete the
>>> NTFS partition:
>>>
>>>
>>> Error erasing: helper exited with exit code 1: In part_del_partition:
>>> device_file=/dev/sdb, offset=400886272
>>> Entering MS-DOS parser (offset=0, size=1000204886016)
>>> MSDOS_MAGIC found
>> use fdisk or gparted and create a new partition table
> 
> So help me here a bit with fdisk.  I have the following:
> 
> fdisk -l /dev/sdb
> 
> Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
> 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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: 0x24796452
> 
>     Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1          782981      803458       10239    c  W95 FAT32 (LBA)
> 
> 

as root:

fdisk /dev/sdb

d

fdisk will ask you if you want to delete sdb1, answer y(es) then type w
to write and quit

After that use any tool you want to create a new partition.

Note: the disk must be unmounted to do this.

- --
François Patte
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. +33 (0)1 8394 5849
http://www.math-info.univ-paris5.fr/~patte
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