I have installer Centos but when I ejecute the command: sfdisk -d /dev/sda | sfdisk /dev/sdb root@server1 ~]# sfdisk -d /dev/sda | sfdisk /dev/sdb Checking that no-one is using this disk right now ... OK Disk /dev/sdb: 1305 cylinders, 255 heads, 63 sectors/track sfdisk: ERROR: sector 0 does not have an msdos signature /dev/sdb: unrecognized partition table type No partitions found And no continue the partitioning...Can I help me please?? Thanks in advanced. fdisk -l [root@server1 ~]# fdisk -l Disk /dev/sda: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 25 200781 83 Linux /dev/sda2 26 90 522112+ 82 Linux swap / Solaris /dev/sda3 91 1305 9759487+ 83 Linux Disk /dev/sdb: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table
Not sure why this happens, but you can try to create a partition on /dev/sdb first using Code: fdisk /dev/sdb and then run Code: sfdisk -d /dev/sda | sfdisk /dev/sdb again.
Re: about fdisk /dev/sdb Thanks Falko for you response but: I have done fdisk /dev/sdb and then select m(menu), then o for create partition valid ms-dos and finally select w for write changes in the disk. And then, I run sfdisk -d /dev/sda | sfdisk /dev/sdb I obtain: root@ubuntu:/home/tecnico# sfdisk -d /dev/sda | sfdisk /dev/sdb Comprobando que nadie esté utilizando este disco en este momento... Correcto Disco /dev/sdb: 1044 cilindros, 255 cabezas, 63 sectores/pista Situación anterior: Unidades = cilindros de 8225280 bytes, bloques de 1024 bytes, contando desde 0 Disp. Inic. Princ. Fin Nºcil Nºbloq. Id Sistema /dev/sdb1 0 - 0 0 0 VacÃ*a /dev/sdb2 0 - 0 0 0 VacÃ*a /dev/sdb3 0 - 0 0 0 VacÃ*a /dev/sdb4 0 - 0 0 0 VacÃ*a sfdisk: Entrada no reconocida: sectores Can I help me please, Falko. Thanks very much.
root@ubuntu:/home/tecnico# sfdisk -d /dev/sda | sfdisk /dev/sdb Comprobando que nadie esté utilizando este disco en este momento... Correct Disk /dev/sdb: 1044 cilinders, 255 heads, 63 sectors/pista Situación anterior: Unidades = cilindros de 8225280 bytes, bloques de 1024 bytes, contando desde 0 Disp. Inic. Princ. Fin Nºcil Nºbloq. Id Sistema /dev/sdb1 0 - 0 0 0 empty /dev/sdb2 0 - 0 0 0 empty /dev/sdb3 0 - 0 0 0 empty /dev/sdb4 0 - 0 0 0 empty sfdisk: Input no Recognized: sectors Can I help me please, Falko. Thanks very much.
I resolved the problem If you have partitions extended the command: sfdisk -d /dev/sda | sfdisk /dev/sdb not found. If you have partitions primary the command: sfdisk -d /dev/sda | sfdisk /dev/sdb FOUND!! WHY?? Disk /dev/sdc: 8589 MB, 8589934592 bytes 255 heads, 63 sectors/track, 1044 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000000 Disk /dev/sdc doesn't contain a valid partition table root@ubuntu:/home/tecnico# sfdisk -d /dev/sda | sfdisk /dev/sdb Checking that no-one is using this disk right now ... OK Disk /dev/sdb: 1044 cylinders, 255 heads, 63 sectors/track sfdisk: ERROR: sector 0 does not have an msdos signature /dev/sdb: unrecognized partition table type Old situation: No partitions found New situation: Units = sectors of 512 bytes, counting from 0 Device Boot Start End #sectors Id System /dev/sdb1 63 9767519 9767457 83 Linux /dev/sdb2 9767520 11727449 1959930 82 Linux swap / Solaris /dev/sdb3 * 11727450 16771859 5044410 83 Linux /dev/sdb4 0 - 0 0 Empty Successfully wrote the new partition table Re-reading the partition table ... If you created or changed a DOS partition, /dev/foo7, say, then use dd(1) to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1 (See fdisk(8).) And finally: root@ubuntu:/home/tecnico# fdisk -l Disk /dev/sda: 8589 MB, 8589934592 bytes 255 heads, 63 sectors/track, 1044 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000cf663 Device Boot Start End Blocks Id System /dev/sda1 1 608 4883728+ 83 Linux /dev/sda2 609 730 979965 82 Linux swap / Solaris /dev/sda3 * 731 1044 2522205 83 Linux Disk /dev/sdb: 8589 MB, 8589934592 bytes 255 heads, 63 sectors/track, 1044 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 608 4883728+ 83 Linux /dev/sdb2 609 730 979965 82 Linux swap / Solaris /dev/sdb3 * 731 1044 2522205 83 Linux Disk /dev/sdc: 8589 MB, 8589934592 bytes 255 heads, 63 sectors/track, 1044 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000000 Disk /dev/sdc doesn't contain a valid partition table
