no partition active

[kifa2000]

Код: [Выделить]

ubuntu@ubuntu:~$ sudo dd if=/dev/zero of=/dev/sda bs=511 count=1
1+0 records in
1+0 records out
511 bytes (511 B) copied, 0,000329108 s, 1,6 MB/s
ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 250.1 GB, 250058268160 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488395055 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: 0x00000000

Disk /dev/sda doesn't contain a valid partition table
ubuntu@ubuntu:~$


[victor00000]

Код: [Выделить]

echo -e "n\np\n1\n\n\np\nq\n" | sudo fdisk /dev/sda

[kifa2000]

(Нажмите, чтобы показать/скрыть)

ubuntu@ubuntu:~$ echo -e "n\np\nl\n\n\np\nq\n" | sudo fdisk /dev/sda
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x14ceca08.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): Partition number (1-4, default 1): Partition number (1-4, default 1): Using default value 1
First sector (2048-488395054, default 2048): Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-488395054, default 488395054): Last sector, +sectors or +size{K,M,G} (2048-488395054, default 488395054): Last sector, +sectors or +size{K,M,G} (2048-488395054, default 488395054): Using default value 488395054

Command (m for help):
Do you really want to quit? ubuntu@ubuntu:~$

[victor00000]

Код: [Выделить]

echo -e "n\np\n\n\n\n\n\np\nq\n" | sudo fdisk /dev/sda

[kifa2000]

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

ubuntu@ubuntu:~$ echo -e "n\np\n\n\n\n\n\np\np\n" | sudo fdisk /dev/sda
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x232adebc.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): Partition number (1-4, default 1): Using default value 1
First sector (2048-488395054, default 2048): Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-488395054, default 488395054): Using default value 488395054

Command (m for help): Command (m for help): Command (m for help):
Disk /dev/sda: 250.1 GB, 250058268160 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488395055 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: 0x232adebc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   488395054   244196503+  83  Linux

Command (m for help):
Disk /dev/sda: 250.1 GB, 250058268160 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488395055 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: 0x232adebc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   488395054   244196503+  83  Linux

Command (m for help): Command (m for help):
ubuntu@ubuntu:~$



Может быть уже поздно, но лудше скажу.Ведь я почему заморачиваюсь так.У меня последняя установка системы снесла все разделы и мои файлы.Я хочу восстановить их.Так что не очень хотелось бы стирать и перетирать что-нибудь лишний раз.Или в нашем случае с этим все впорядке?

[victor00000]

Код: [Выделить]

echo -e "n\np\n\n\n486301695\n\n\np\nq\n" | sudo fdisk /dev/sda

[kifa2000]

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

ubuntu@ubuntu:~$ echo -e "n\np\n\n\n486301695\n\n\np\nq\n" | sudo fdisk /dev/sdaDevice contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xa889b520.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): Partition type:
   p   primary (0 primary, 0 extended, 4 free)
   e   extended
Select (default p): Partition number (1-4, default 1): Using default value 1
First sector (2048-488395054, default 2048): Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-488395054, default 488395054):
Command (m for help): Command (m for help): Command (m for help):
Disk /dev/sda: 250.1 GB, 250058268160 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488395055 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: 0xa889b520

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   486301695   243149824   83  Linux

Command (m for help):
ubuntu@ubuntu:~$


[victor00000]

Код: [Выделить]

echo -e "n\np\n\n\n486301695\n\n\np\nw\n" | sudo fdisk /dev/sda и ребут, лайфкд.
Пользователь решил продолжить мысль 29 Августа 2013, 00:18:09:

Код: [Выделить]

sudo fdisk -l?

[kifa2000]

Что такое лайфкд?

[victor00000]

kifa2000,
liveCD

потом

Код: [Выделить]

sudo fdisk -l

[kifa2000]

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 250.1 GB, 250058268160 bytes
225 heads, 34 sectors/track, 63842 cylinders, total 488395055 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: 0x433893e8

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   486301695   243149824   83  Linux
ubuntu@ubuntu:~$




[victor00000]

Код: [Выделить]

mkdir sda1
sudo mount /dev/sda1 sda1
ls sda1?

[kifa2000]

Код: [Выделить]

ubuntu@ubuntu:~$ mkdir sda1
ubuntu@ubuntu:~$ sudo mount /dev/sda1 sda1
ubuntu@ubuntu:~$ ls sda1
bin    dev   initrd.img      lost+found  opt   run      srv  usr
boot   etc   initrd.img.old  media       proc  sbin     sys  var
cdrom  home  lib             mnt         root  selinux  tmp  vmlinuz
ubuntu@ubuntu:~$



[victor00000]

Код: [Выделить]

sudo su
mount --bind /dev sda1/dev
mount --bind /proc sda1/proc
mount --bind /sys sda1/sys
chroot sda1
update-grub
exit
umount -lf sda1/sys
umount -lf sda1/proc
umount -lf sda1/dev

[kifa2000]

Успел ввести только 1,5 команды и тут это-

(Нажмите, чтобы показать/скрыть)

Код: [Выделить]

ubuntu@ubuntu:~$ sudo su
root@ubuntu:/home/ubuntu# mount --bind /dev sda1/dev
root@ubuntu:/home/ubuntu# mount
/cow on / type overlayfs (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
/dev/sr0 on /cdrom type iso9660 (ro,noatime)
/dev/loop0 on /rofs type squashfs (ro,noatime)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
gvfsd-fuse on /run/user/ubuntu/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=ubuntu)
/dev/sda1 on /home/ubuntu/sda1 type ext4 (rw)
/dev on /home/ubuntu/sda1/dev type none (rw,bind)
root@ubuntu:/home/ubuntu#