3 ms·

I would like to see approaches to recovering data from fragile disks by placing the inner disk on a flat surface and using some kind of imaging technology to me

I would like to see approaches to recovering data from fragile disks by placing the inner disk on a flat surface and using some kind of imaging technology to measure the magnetic fields - perhaps an electron microscope could do the job at low enough field strengths? Using this I imagine it might be possible to not only read the disk data, but perhaps even previous versions of data that has been overwritten.

userbinator 5mo ago
Magnetic field cameras exist: https://matesy.de/en/products/cmos-magview https://matesy.de/en/products/cmos-magview https://en.wikipedia.org/wiki/File:Visualization_of_magnetic_information_on_a_Floppy_Disk_(CMOS-MagView).jpg https://en.wikipedia.org/wiki/File:Visualization_of_magnetic...
- rkagerer 5mo ago
  Could you use them on a hard disk platter? Is there software out there for recovery of data from a set of platters taken from a bad HDD for which replacement heads / doner drives are not longer available?
  - userbinator 5mo ago
    Perhaps only a very early hard drive, as 15um is the resolution of those cameras but the latest hard drives have a track pitch around 100nm (0.1um); in any case, in the data recovery industry the usual solution is a spinstand: https://www.guzik.com/products/head-and-media-disk-drive-test/ https://www.guzik.com/products/head-and-media-disk-drive-tes... https://ieeexplore.ieee.org/document/4262329 https://ieeexplore.ieee.org/document/4262329
aaron695 5mo ago
[dead]