an internal hdd ... It is obviously not mounted ... so, the dd if=/dev/sda of=abc.img bs=4K status=progress always fails at ~23GB mark with an input/output error ... I tried fsck ing all the partitions but no errors were detected ... any ideas what could be causing that? there is an NTFS partition at the 23GB point that has a windows installation.
bad sectors. you can skip them by adding conv=sync,noerror
fsck ckecks only FS structure, but you have problems with bad sectors.
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