40

Yes, this is totally normal, and comes from the manufacturing/casting process. Those 'bumps' are impurities/air pockets in the casting process, but since they don’t affect the function of the disk (or the stability of the casing), they are not machined away.


37

The Seagate ST4000DM004 uses SMR to write data to the disk surface. This means, that in order to write a single byte, it might have to rewrite multible Gigabytes. In "normal usage patterns" (as designated so by HDD vendors, not by users!) this creates not much of a problem - the data is written to a CMR cache on the outer rim of the disk, later ...


21

DBAN will make the data unusable. You should still be able to partition and format the drive to use it again. DBAN might, on a drive that is already very close to failure, provoke the final death throes and make a drive completely unusable, but that drive would have to have been pretty much nearly dead already.


19

It is probably irrelevant to the functioning of the drive and is pretty common. The drive chassis will be die cast aluminium, the cheapest way to manufacture with minimal waste, and then processed in a second stage to flatten surfaces that need to mate with other surfaces. Die casting can result in imperfections in the moulded piece, especially on external ...


7

By design DBAN is supposed to destroy the data, not the drive. However, some of the more overzealous erasure modes of DBAN overwrite every single bit on the drive multiple times with multiple different values. For example, the "gutmann" mode will do 35(!) overwrites of every single bit. This kind of abuse is not how drives are usually used and can ...


7

Unless you're worried about a future owner of the drive being able to access your old data, you don't need to nuke it at all. Just reformat if it's still for your own use.


3

You can't. The laptop's HDMI port is not designed to receive HDMI signals, and even if it was, it would most certainly need some sort of capture software to capture the signal and show it on the laptop's screen. As for the keyboard; without some weird HDMI tricks, custom hardware and a custom driver, it would be impossible to get a keyboard signal to go over ...


2

Since Windows XP there is the Volume Shadow Copy Service which can show a "point in time" consistent backup capable view of a system or disk that is in use without it needing to be unmounted first. It appears to have been variously enhanced and and used by other applications as a backup service. Backing up and restoring critical business data can ...


1

It destroys the data, not the drive.


1

It would seem highly, highly likely its a disk issue rather then a controller one. SMART values are a report of what a hard disk thinks of itself so it does not matter if its queried over USB or otherwise - the disk thinks its the problem. As the disk is likely on its way out, getting a second disk and finding a computer where you can plug both disk in on ...


1

old laptop:-Samsung NP300E5Z-S0AIN with broken screen But main question is how can I completely disable laptop's own display so that it don't even detect it and defaults to external only. So atleast I can see current Bios setting, if something can changed to prevent boot loop. You cannot substitute an external screen in most laptops (95% plus) and so you ...


1

It turned out that I could easily read the data on the drive by avoiding the USB brigde and connecting it directly to the internal SATA port of (an)other computer.


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