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Mick wrote: |
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> On Wednesday 08 Aug 2012 05:21:31 Adam Carter wrote: |
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>>> To wipe a drive use dban. - live CD which uses (US) gov approved |
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>>> standards of wipe methods/patterns. |
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>> Or shred, which comes with coreutils. |
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>> |
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>>> dd is only going to show sectors on a failed drive - too late! |
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>>> |
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>>> To explain, modern drives have a store of locations they can use to |
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>>> transparently replace any failed locations (apparently similar to the |
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>>> way SSD's do it) - the internal drive electronics handle this and its |
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>>> not visible externally though smart data seems to show it, but as google |
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>>> says, smart is a bit suspect. The problem of a bad sector will only |
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>>> show once all the reserved locations are used up, by which time the |
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>>> drive is usually in rampant failure. |
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>>> |
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>>> I do suspect this is one reason for googles results - actual failures of |
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>>> the media (as against the motors/electronics are much as they always |
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>>> have been, but the drives are not reporting them until its too late. |
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>> Ahh - go to know. My reasoning assumed that smart reports all remaps. |
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> May be it does, but I understand that dd or shred won't overwrite them, or any |
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> bad blocks. You'll need the hdparm ATA secure erase (or enhanced secure |
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> erase) feature for that. |
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> |
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> BTW, Dale make sure that you plug the drive in a SATA controller for running |
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> the hdparm erase function. It has been reported that doing this using a USB |
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> port will brick the drive! |
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I don't use USB for drives, except the USB stick thingys. |
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I have a question sort of related to this. Anyone can share info. I |
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see boxes that hold drives in them and connect via ethernet or something |
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like that. Do those work really well? I thought about getting one |
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someday but I don't know what they do and how they do it EXACTLY. Is it |
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like a small puter in there or some other means of getting the data |
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across? |
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Right now, I like having my drives in my Cooler Master case. The fan |
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blows right on the drives so they stay nice and cool. But, I have given |
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thought to having the non OS drives in one of those little boxes, maybe |
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using RAID and mirroring the data on two drives. |
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Just what magic is in those things? |
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Dale |
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:-) :-) |
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-- |
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I am only responsible for what I said ... Not for what you understood or how you interpreted my words! |
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