Skip to main content

Hard disk partition not getting detected by Windows Explorer

I recently encountered a problem with my Toshiba external hard disk. While transferring files from the hard disk to my computer, my laptop shut down unexpectedly because of some hardware issues. When it came back, the particular partition in the external hard disk from which I was copying file was inaccessible!

Windows explorer looked something like this -
Notice that I had 3 partitions in the external hard disk (G:/, H:/ and I:/). Drive I:/ became invisible.

I looked a further and found that computer management was able to detect the partition well, but it couldn't find out the format of the partition, and moreover there wasn't any letter assigned to that partition.
Right clicking the partition and trying to assign a letter invariably ends up in error saying
The operation failed to complete because the Disk Management console view is not up-to-date.  Refresh the view by using the refresh task.  If the problem persists close the Disk Management console, then restart Disk Management or restart the computer.
 After lots of jugglery and googling, I ended up in a page from answers.microsoft.com.  The solution was simple, just uninstall the usb driver for that hard drive and replug the drive again so as to reinstall the driver again.

And voila, it solved the problem.

Labels:
Location: Kamothe, Panvel, Navi Mumbai, Maharashtra 410206, India

Comments

Post a Comment

Popular posts from this blog

Multimaster replication with Symmetric DS

Symmetric DS is an awesome tool for trigger based replication whcih works for all major database vendors, including but not limited to PostgreSQL, MySQL, MSSQL, Oracle and many others. Symmetric-DS is a java application and can execute on any platform on whcih JRE is available including Windows and Linux. Trigger based replication, in constrast to disk based (eg. DRBD ) or transaction log file shipping based or statement based , works by registering triggers on DMLs and sending the data thus generated to remote machines. Another very popular trigger based DB replication tool is Slony . Symmetric-DS in addition to being database agnostic also supports multi-master replication (MMR). MMR usecase involves multiple database nodes, connected in a pool with DML updates coming from any of them. This is different from the normal master-slave replication, where slaves are not expected to generate any data events, and the sole authority of database is the master. MMR requirement causes d...
1 comment
Read more

PC Power supply and hacks

For posterity and myself, I'm leaving some tips and tricks of PC Power Supply Unit (PSU) whcih is an SMPS (Switched Mode Power Supply). There are a variety of uses of a +12V, +5V and +3V DC power supply like lighting up an LED strip or powering a raspberry pi. There are various colored cables in a typical ATX 12V SMPS. I'll list out the various color lines and what they mean, Sr. No Cable color Number of cables in a PSU Use 1 Green exactly one (1) Wake up signal from motherboard. Pressing PC power button makes this signal carry wake up signal to PSU to start. Green needs to be touched with the any ground to make the SMPS start. For self-starting PSUs, green needs to be connected with one black all the time. 2 Blue exactly one (1) -12V 3 Purple exactly one (1) +5V standby. When power supply is on standby mode (not on by signalling green), this line can give 1-2 A current. 4 Gray exactly one (1) Power good signal. When PSU levels has reached specificati...
3 comments
Read more

Cryptographic Primitive III: RSA Asymmetric Keys

RSA cryptosystems involves, a private key (which is kept private) and a public key, which is kept public i.e. known to everyone. The security of RSA hinges on the mathematically difficult problem of finding prime factorization of a very large number. Let's quickly disuss how a public, private key pair can be generated, Let, p and q be two large primes, then $n = q \times q$ $\phi(n) = (p-1) \times (q-1)$ Here, $\phi(n)$ is called euler's totient function Choose a random number $e$ such that, $e \in \left\{0,1,2...\phi(n)-1\right\}$ and $gcd(e,\phi(n)) = 1$ The gcd condition will ensure that we have an inverse of $e$ in $\mathbb{Z}_{26}$. Now, using extended euclidian algorithm one can get the inverse of e as d such that, $d \equiv e \pmod{\phi(n)}$ So, there we have it, the private key is $e$ and the public key is $(n,d)$. Few points to note here are, $p$ and $q$ are both $\geq 2^{512}$, although the recommened size is $2^{1024}$ $n$ is $\geq 2^{1024}$, although the recommended...
Post a Comment
Read more