Question about Computers & Internet
Run the chkdsk utility Click start run type cmd then type chkdsk/r/f which will scan for and attempt to repair any bad sectors and automatically fix any corrupt files on your hard drive another way of running the chkdsk utility Click start control panel administration tool computer management disk management right click on your drive select properties tools click check now click start two boxes automatically fix files and scan for and attempt recovery of bad sectors place then a tick in both boxes then select check now tart should schedule this task when restart have no input while the chkdsk utility is in progress any input may damage your computer check all power and data leads that attach from motherboard to your hard drive for secure dust free connections if it's a 40 pin flat ribbon type ide this will be the first to fail Hope this helps.
Posted on Jan 23, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Corrupt External Hard drive
I have a 250 g ext.drive. I moved all my pictures from my pc to it and now the hard drive will not open. It is nearly full. It acts like there are no files on it. What should I do, unplug it?, restart the pc, plug it into another usb port on the pc.....help????...all of my pictures are gone!!!!!..........RB
Posted on Apr 02, 2008
Data can be recover but the drive must be accessible by OS. As you write windows vista says drive is not accessible and that the disk structure is corrupted and unreadable.Do one thing try the same drive at another PC. If it run on that PC copy the data to that PC. Now format the drive and paste the same data back to your drive. But, if same thing happend then there are chances of fault in the driveand for this you shuld visit to the service cetre but, they are not responsible for the data.
Thanks & regards,
Posted on Apr 06, 2009
I think the reason it was telling you to format the flash drive was that it couldn't read the FAT table on the drive probably because the drive was damaged. Stands to reason that when you try to format it, because it's damaged, you can't do so. I have seen a lot of bad sandisks. I think a lot of people pull them out of the USB port while it's still being used without "Safely Removing Hardware" and it damages them. The following article may explain why.
The "safely remove hardware" bit is used because removable drives like USB sticks and camera memory have a file system on them just like your hard drive does. Most of these drives are small (<= 32 GB) so they use FAT16 as the file system type. FAT16 is an older file system and writes to the disk are simply done on demand. If the power to the machine is cut or the drive is simply yanked out during a write, this will result in incomplete data and possibly a corrupted file system on the drive. The "Safely Remove Hardware" bit calls for all programs accessing the drive to complete whatever reads/writes they need to as the drive will be removed. When all I/O is complete, the OS removes the drive from its list of usable drives and then pops up the bubble telling you it's safe to remove it.
If you formatted your memory card/USB stick yourself and put a journaled file system like NTFS, ext3, XFS, ZFS, HFS+ or ReiserFS, then the removal is different. All writes to the drive are first written to a journal, which is a temporary space on the drive. Once the data is written to the journal, then the data in the journal is written to its final location on the drive, overwriting the original data. Yanking out the drive will cause the following things to happen:
1. Yanking the drive out before the data has been completely written to the journal causes the original data on the drive to remain safe. The changed version of your file that was being written to the journal is lost as the FS sees that there is an incomplete write to the journal and flushes the journal the next time the drive is accessed.
2. Yanking the drive out after the data is written to the journal but before it can be completely written to the file system results in the partially-modified file in the file system being replaced with the good copy on the journal the next time the device is accessed. The user would never know that the final write never completed.
3. Yanking the drive out before any writes to the journal occur or after the data from the journal was successfully copied to the file system cause no issues as the drive is idle.
Safely removing a disk with a journaled file system causes the same actions as with the non-journaled file system but will also cause the disk to make sure that all of the journaled data has been written to disk successfully. Journaled file systems are more modern and much more reliable than non-journaled file systems. They still should be removed safely, but the consequences for not doing so are basically that it takes a longer time to access the disk upon the next access (due to journal-file comparison and flushes.)
The reason that journaled file systems do not commonly appear on UBS sticks or camera cards is because of Microsoft. Most people run Windows computers and Windows computers can only recognize FAT16/FAT32 and NTFS file systems out of the box. ext3 support can be easily added via a driver, but the other file systems require some external program to access (ReiserFS) or are completely unreadable in Windows (XFS, ZFS, possibly HFS+ as well.) NTFS isn't used on removable devices because it is covered by Microsoft patents while the FAT file systems are direct descendants of the original DOS file systems and are in the public domain. Device makers would have to pay MS a royalty fee for every device shipped if it was pre-formatted with NTFS. So the device makers have a few options:
1. Ship the drive with FAT formatting for free even though it's sub-optimal.
2. Ship the drive with NTFS formatting and pay MS $0.25 (IIRC) per unit shipped.
3. Ship the drive unformatted for free and require the user to format it on their computer, where they can format NTFS for free. This axes out-of-the-box working ability.
4. Ship the drive with ext3 for free and require that the users download the Windows ext3 IFS driver for free. This also axes out-of-the-box working ability and renders the device unusable on computers where the user doesn't have admin access to install the ext3 driver (work computers, public terminals.)
Most manufacturers want easy-to-use and cheap rather than good so they ship FAT-formatted drives. I leave mine formatted as FAT as cameras won't support anything but FAT16 and since I don't run Windows, I can r/w to FAT but basically only read from NTFS (write support is VERY limited.) I'd simply format my USB stick ext3 and be done with it, but I use my drive a lot on university computers and I highly doubt that the techs would install the ext3 drivers for me.
Posted on Oct 03, 2009
SOURCE: external hard drive not detected
Check your jumpers on the hard drive. DON'T leave it connected very long if the jumpers are not set for master / slave (furthest away/ closest to the IDE port on the computer or it can mess up the circuit boards on one or both drives! If you are using only one hard drive, set the jumper(s) for "cable select" (often abbreviated CS). If it still doesn't detect the drive, the drive may not have an "active" partition on it. You can solve that by booting to your OS installation CD -- assuming you have one!
Posted on Feb 02, 2010
Tips for a great answer:
Jan 22, 2013 | Computers & Internet
May 23, 2012 | Seagate FreeAgent Pro - 500GB, 7200 RPM,...
Aug 31, 2011 | SimpleTech SimpleDrive Pininfarina 500GB...
May 27, 2011 | SanDisk 2GB Cruzer Micro SDCZ62048A10 Hard...
Sep 24, 2010 | Kingston (DTIU3/2GB) 2 GB USB Hard Drive
Jun 24, 2010 | SmartDisk FireLite 40 GB Hard Drive
Jun 23, 2008 | Western Digital 500GB My Book World...
Jan 28, 2008 | SanDisk 2GB Cruzer Micro SDCZ62048A10 Hard...
40 people viewed this question
Usually answered in minutes!