There are many types of symptoms and some require simply copying your files this week. Other symptoms indicate that you should stop using the equipment immediately. The primary reason why most recoverable drives ultimately end up being expensive is because they were treated as though they had the former type of symptom.
Each mechanical symptom worsens with each additional minute used. The logical and performance type symptoms provide you with time to act. Sorting which category the symptoms fall under is the critical factor.
Clicking or ticking: the heads don’t receive servo information. Grinding or scraping: the heads contact the platter, permanently damaging the surface with each rotation. Beeping: usually a seized motor or stiction, the drive trying to spin but unable to do so. Burning smell or visible damage due to a surge or spill.
There are four different types of failure. Each type has physical reasons. None improve with another try. Each time you power the unit on, you reduce what can be recovered. Disconnect and stop using the drive; do not use diagnostics; do not create one last copy.
Files that fail to open or copy, which may also produce CRC (cyclic redundancy check) error messages. Growing slowness, especially when transferring files to a disk; the transfer stalls at the exact same place each time, and this is usually due to the drive trying to read an unreadable sector many times over before it gives up. Freezes and blue screens associated with disk usage. Files or folders disappearing, or in some cases, having their names changed to something that looks like gibberish. SMART warnings produced by Windows or by a third party monitoring tool.
The above symptoms are indicative of either bad sectors or damaged file systems on a drive that otherwise appears to be functioning normally. That is your window: make copies of all irreplaceable data onto another drive as soon as possible. Start with the information that you would miss the most if lost, then replace the original disk. Do not perform a complete surface test prior to doing so; since we know the disk is failing, performing such a task will require the disk to attempt to read every single one of its sectors.
A slow computer by itself is usually due to either a software issue or a full disk and/or an ageing computer as opposed to a failing hard disk; determine if the slowness relates to disk usage prior to making this determination. An external that is not detected is most likely a cable, port, or bridge board issue versus a dead disk; try connecting it via a different cable since it will cost you nothing. One corrupt file after a system crash or improper removal is likely due to file system issues as opposed to hardware, especially when all other files are reading properly.
When copying from a working, but possibly failing, hard drive, copy by value instead of alphabetical order: your non-replaceable items first (e.g., family photos), and your replaceable items (e.g., install DVDs) never. Only copy to a separate physical drive; do not place them into a folder on the original. Once you’ve copied off your data, quit using the drive; once you’ve started losing sectors on a hard drive, you’ll continue to lose them, and each hour of use spends reads which could be needed later.
When the hard drive fails, then it costs from £300 +VAT after a free 48-hour diagnostic report & a written price quotation. In most cases you only pay if we recover your data.
There are two main types of symptoms. Critical: the click/tick/grind/beep or burning smell, so turn off now. Important too, but less critical: file(s) can’t open; stalls during transfer; freezes occurring whilst disk activity occurs; file(s) disappearing & SMART warning, so copy your data ASAP.
No, switch it off. A backup from a mechanically failing drive (the one that is going to fail soon) is hours of identical stress to the type of read/write that will cause further damage. Chances are your backup will stop before completion as well. Have it assessed instead.
Not always, nor usually. Slow performance alone is far more likely to be due to software issues, being completely full, or the age of the system. The symptom profile related to the drive itself is much more specific. Symptoms include stalls during transfer at the same point every time; freezes associated with disk access; and failures opening files.
Often not. The cable, port or USB bridge board may fail (at least) as often as the external disk. Before giving up, test the drive with a different cable and try a different port. However, if the drive makes clicking or grinding noises, shut down immediately and unplug the drive!
For a single drive the price will be from £300 + VAT. We provide a fixed written quotation based on the results of a free 48-hour diagnostic. In most cases you only pay if we recover your data. There is a 50% deposit required for all donor parts work; the balance is only paid when we are successful.