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Quantum QML40000LC-A Data Recovery Information

These are some real problems experienced by QML40000LC-A and Quantum hard drives in general.

Drive QML40000LC-A is detected on boot sometimes, but attempts to recover or read data fail. No clicking sounds, appears to power on and spin up properly. Tried running spinrite, wd data lifeguard diagnostics, wasn't able to see the drive most of the time.
Brooklyn R.
Waterloo, Ontario, Canada

Most common problem for Quantum drives is bad sectors. After some period of time magnetic media that covers the platters starts to degrade and magnetic domains can't be turned in a desired direction by writing element of the head. This is how bad sectors appear.
When the drive starts reading data from such unreadable bad sector it could start freezing, scratching and sometimes even clicking: . This leads to further damage to the heads and surface, and may result in further data loss. As soon as you start experiencing such symptoms stop the drive immediately and send it to our data recovery lab for evaluation. Any further attempts would just add up to the problems. In our lab we use special imaging hardware tools that are capable of reading raw sector data ignoring checksum check. That's usually the only way to get as much data as possible from these LBAs.

Another quite common symptom Quantum drives have is clicking or knocking sound. The drive usually spins up, clicks a few times, spins faster, clicks again and spins down: . Most often this a sign of a bad head, but before doing any clean room work, it is very important to perform accurate diagnostics and eliminate a chance of possible firmware corruption that sometimes could also cause clicking.

My laptop nor any other computer recognizes the HD. No noise comes from the drive, only the blue power light comes on and is steady. The P/N is QML40000LC-A(Quantum). Used an IBM IEEE 1394 CardBus Card with firewire and attempted to access it that way and a balloon popped up searching for an "HDD button and lights driver".
Adam K.
Salt Lake City, Utah, USA

Quantum hard drives are also well-known for their firmware problems. If one of the firmware modules becomes corrupted, the drive fails to initialize correctly and stops working making the data inaccessible. In such case the drive is either

not found in BIOS at all
shows up with wrong S/N or capacity,
or fail to read any data or boot up operating system.

If you attempt to boot up from such drive or read any data from it you would get "Primary Master Hard Disk Fail" or "No operating system found" or "USB Device malfunctioned" error or something similar.

If you experience any of the symptoms described above with your Quantum QML40000LC-A please feel free to contact us to get upfront quote on data recovery from your failed drive.

If you hear your Quantum QML40000LC-A hard drive making some other unusual noises visit our Hard Drive Sounds page for more details.