This is generally the best option, but usually only available on (non-ancient) hard disk and solid state drives. or instructed to perform integrity self-tests of different thoroughness. warns about likely failure in the near futureĭevices that support it, can be queried about their health through S.M.A.R.T.instantaneous to slow or slower (depends on thoroughness of the test).(I've come across USB drives that work on Windows without special drivers, but not on Linux or OS X.) S.M.A.R.T. In the latter case, a different operating system is worth a try. In the a former case, with a bit of luck, a data recovery specialist with an appropriately equipped lab can salvage its content. If this command results in a message about an “Input/output error”, our drive is broken or otherwise fails to interact with the Linux kernel as expected. This can be verified easily with: sudo dd if=/dev/sdc of=/dev/null count=1 It still appears as a block device to the kernel and in the disk manager, but its first sector holding the partition table is not readable. Sometimes a storage medium simply refuses to work at all. almost instantaneous (unless medium is spun down or broken).only detects entirely unresponsive media.on the terminal look at the output of lsblk and ls -l /dev/disk/by-id and try to find the right device by size, partitioning, manufacturer and model name.
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