Solution for “Disk Utility” WARNING: The partition is misaligned by 1024 bytes

Recently, while I was trying to install Linux Mint 13 Maya on Western Digital 1 TB Cavier Green Hard disk, the Disk Utility displayed the warning:

WARNING: The partition is misaligned by 1024 bytes

As usual, search by Google displayed numerous curt and detailed solutions. BTW this Disk is formatted with GUID Partition format. Continue reading

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Superblock read error| Diagnosing correct ext file system | Surviving fsck.ext3.ext4 messages in Precise Pangolin 12.04.

Finally it happened. My laptop was a bit slow yesterday evening as also in the morning. In the evening it simply did not boot. It has Precise Pangolin 12.04 with Cinnamon. Unity has not been removed. The message it displayed was:

General Error mounting filesystem.
A maintenance shell will now be started.
Control-D will terminate this shell................
sulogin.............etc. etc.

Apparently the disk could not be read. A typical File system error. After the boot loader hands over the command to OS, the first thing it reads from disk is called “Superblock” which includes the disk’s geometry information, available free space, and most important is the location of the first i-node i.e. beginning of disk.

Now I rebooted with Puppy Linux (A 200 MB Distro with everything we need) but it could not find Wifi radio driver on the Dell XPS laptop but it booted well and quick. Puppy did not have fsck.ext3 command. So I rebooted with Knoppix and tried this command on the Terminal:

       fsck.ext3 -n /dev/sda2

This was the output:

"Superblock could not be read or does not describe correct ext2 
filesystem. If the device is valid and really contains an ext2
filesystem (and not swap or ufs or something else), 
then superblock is corrupt, and you might try
...............alternate superblock"

fsck.ext4 helpIt also suggested a command with alternate superblock number but that could have ruined harddisk. It did once earlier. “fsck –help” was not helpful either. Actually it was but message was hidden and I did not notice the relevant part earlier.  So how I survived this time? Continue reading

Hard disk

Western Digital

While the prices of hard disks have gone up by nearly 100% i.e. double in past six months the quality has nose-dived. I have already replaced three of Western Digital make within a period of a year.

Hitachi

An external Hard disk (model X-320) of Hitachi also broke down in about a year and I had to send for its replacement but the worst part is that the replacement sent to me was also broken and I had to send it again on the same day in same packing for replacement. Never buy a HITACHI disk. Today I received the replacement. It did not work on desktop but worked on Laptop. Let’s hope it will work.

Added on 17 Nov. 2012:

Never buy Western Digital

Its Hard disk are of very poor quality. I had purchased three hard disks in past few years, two have been replaced once. One hard disk was replaced about four-month ago was again having reading errors. It has to be replaced again. I wonder what is the problem. I had always believed that Western Digital being technically innovative must also be durable, proved to be a myth. Never ever buy a Western Digital Disk.

© Sandeep Bhalla