Difference between revisions of "Memperbaiki Superblock ext4"

Latest revision as of 07:55, 14 July 2014

Sumber: http://linuxexpresso.wordpress.com/2010/03/31/repair-a-broken-ext4-superblock-in-ubuntu/

Cek partisi yang ada,

sudo fdisk -l

Dapatkan nomor partisi yang digunakan,seperti, /dev/sda3 atau /dev/hdb1.

Pastikan superblock yang menjadi masalah, cek filesystem ganti xxx dengan nama partisi. Kita dapat mengubah ext4 menjadi ext3 atau ext2

sudo fsck.ext4 -v /dev/xxx

Jika superblock korup, keluaran akan seperti berikut

fsck /dev/sda5
fsck 1.41.4 (27-Jan-2009)
e2fsck 1.41.4 (27-Jan-2009)
fsck.ext4: Group descriptors look bad... trying backup blocks...
fsck.ext4: Bad magic number in super-block while trying to open /dev/sda5
    
The superblock could not be read or does not describe a correct ext4
filesystem.  If the device is valid and it really contains an ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>

Selanjutnya kita perlu menemukan dimana backup superblock di simpan.

sudo mke2fs -n /dev/xxx

Akan tampak daftar tempat backup

Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208

Restore superblock dari backup, ganti xxx dengan nama partisi dan block_number dengan nomor backup.

sudo e2fsck -b block_number /dev/xxx

Reboot, dan superblock harusnya fix.

Jika tidak, ulangi langkah di atas, tapi restore dari backup superblock lainnya.

Referensi

http://linuxexpresso.wordpress.com/2010/03/31/repair-a-broken-ext4-superblock-in-ubuntu/

Difference between revisions of "Memperbaiki Superblock ext4"

Latest revision as of 07:55, 14 July 2014

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@@ Line 2: / Line 2: @@
-First, figure out what partition we’re dealing with.
+Cek partisi yang ada,
   sudo fdisk -l
-The above will list all the partitions on all the drives in your computer. To recover a lost partition, your going to need Testdisk. Testdisk is included in Parted Magic, and there’s a great guide on their site. For this though, we just need the partition number, such as /dev/sda3 or /dev/hdb1.
+Dapatkan nomor partisi yang digunakan,seperti, /dev/sda3 atau /dev/hdb1.
-Now, make sure your superblock is the problem, by starting a filesystem check, replacing xxx with your partition name. Here, you can change ext4 to ext3, or ext2 to suit the filesystem.
+Pastikan superblock yang menjadi masalah, cek filesystem ganti xxx dengan nama partisi. Kita dapat mengubah ext4 menjadi ext3 atau ext2
   sudo fsck.ext4 -v /dev/xxx
-If your superblock is corrupt, the output will look like this
+Jika superblock korup, keluaran akan seperti berikut
   fsck /dev/sda5
@@ Line 26: / Line 26: @@
   e2fsck -b 8193 &lt;device&gt;
-Now lets find where your superblock backups are kept.
+Selanjutnya kita perlu menemukan dimana backup superblock di simpan.
   sudo mke2fs -n /dev/xxx
-Down at the bottom of this output, should be a list of the backups
+Akan tampak daftar tempat backup
   Superblock backups stored on blocks:
 , 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208
-Your almost there. Finally, restore the superblock from the backup, again replacing the x’s with your partition name, and block_number with the first backup superblock.
+Restore superblock dari backup, ganti xxx dengan nama partisi dan block_number dengan nomor backup.
   sudo e2fsck -b block_number /dev/xxx
-Now reboot, and your superblock should be fixed. If it’s not, repeat the steps, but restore a different backup superblock
+Reboot, dan superblock harusnya fix.
+Jika tidak, ulangi langkah di atas, tapi restore dari backup superblock lainnya.