Why should we wipe disks multiple times?
103589
How many passes do you need to wipe/shred your files to make them not undeletable?
102888
Fastest, surest way to erase a hard drive?
12343
How can I securely erase a hard drive?
44728
How to delete file(s) in secure manner?
93293
How do I merge two unallocated, non-sequential partitions on the same logical disk?
102732
How many files can rm delete at once?
94401
What's the frequency of filesystem check on boot?
122860
How do you do a dry run of rm to see what files will be deleted?
27245
How to find (and delete) duplicate files
102890
Is it necessary to eject external drives before logging out, restarting, or shutting down?
7820
Why are there so many different ways to measure disk usage?
134663
Why CTRL + C multiple times
114616
Is system cleanup/optimization needed
155673
Securely erase hard drive using the Disk Utility
101995
Disk is likely to fail soon (37° C / 99° F)
117233
How to wipe free disk space in Linux?
98747
shred multiple hard drives