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| Thread ID: 97213 | 2009-02-07 21:34:00 | HDD Regenerator V1.51 | B.M. (505) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 745865 | 2009-02-09 01:14:00 | IF the issue is just the "power off at the wall" sort of thing, then surely its not doing permanent damage to the HDD, and its just a filesystem corruption more than anything else, yes? This is similar to pulling out a USB Thumdbrive while its being written to. Its probably corrupted whatever you were writing, but at the end of a day a format fixes it. If its physically damaged (bad sectors on your HDD) then as far as Im aware no amount of formatting will fix that! |
Chilling_Silence (9) | ||
| 745866 | 2009-02-09 01:18:00 | Correct Chill - if a drive has bad sectors, a format simply marks the sectors as bad which in turn means the OS is told not to write data to them. In a sudden power cut - the HDD's write heads come crashing down on the drive surface, and possible causing damage. Internals of a HDD (www.imagef1.net.nz) - that arm / write head flies microns above the Spinning Disc, when a PC shuts down normally, the Write head will not damage the Disc. A sudden power cut usually means the head crashes onto the Disc. Thats also why if a drive gets a sudden Knock it can slide the arms across the Disc. This here (www.storagereview.com) explains it well. If you can picture a Old vinyl record and someone dropping the stylus on it = Damage. |
wainuitech (129) | ||
| 745867 | 2009-02-09 02:03:00 | Still not too sure what happens on modern-day HDD's if power is cut to them, that document looks quite old indeed :D | Chilling_Silence (9) | ||
| 745868 | 2009-02-09 03:21:00 | Several of the cloning programs I use, actually stop at a bad sector and ask if they should continue - Why you may ask - Well its like a jig saw puzzle with a piece missing- with the bad sector having the missing data. We had our email server 1month old with a bad hdd that didnt report a bad drive from the raid card. bad data got written to the backups, was down for 3 days with no email :annoyed: but the local guru recovered all emails and got system going again, more of an annoyance as users had to use their phones, remember those things? I have used hdd regenerator but the same bad sector keep showing up, not sure what i was doing wrong, the drive is now in landfill. It was a raptor also. |
Gobe1 (6290) | ||
| 745869 | 2009-02-09 03:55:00 | Still not too sure what happens on modern-day HDD's if power is cut to them, that document looks quite old indeed :D The article is quite old, but basically the way a drive works is still the same, just with technology advancements, they get more data squeezed in, the head technology is meant to be better, and the drives are meant to last longer. Depending on the technology used will depend on where the heads come to a rest when shut down. If interested - this is tech stuff - but have a look at these Videos (www.youtube.com) - interesting about the bad block / sector lists on a drive ( near the end of the video Pt1 ) |
wainuitech (129) | ||
| 745870 | 2009-02-09 07:33:00 | For those that are interested here is a summary of this saga to date . Started with being unable to boot, with a /Windows/System32/config/System missing or corrupt . Message . Replaced the config/system file and the system booted . Suspected failing HDD . Ran chkdsk /r which took 10hrs to complete . Found a file called Found . 000 which was 12 . 5gig :eek:and only contained . chk files, one of which was 8 gig . :eek: Ran HDD Test from UBCD4 and it discovered 15 damaged blocks taking up 0 . 6% of disk . Ran Seagate Tools which passed the SMART test the Short Test but failed the Long Test for generic and the other one . (std) or something? Ran HDD Regenerator and came up with: 78,140,160 Sectors Scanned – 1452 Found Bad – 1452 Recovered . Great, Ran Chkdsk, ohhh 2720 Bad Sectors . Ran Seatools again . Complete clean bill of health now . 100% pass . Confusing isn’t it? Ran HDD Test from UBCD4 again and this time 100% Bill of Health . Not one bad sector and totally agrees with Seatools . So HDD Regenerator seems to have achieved something . Ran Chkdsk again and yep, still 2720 Bad Sectors which I guess proves that Windows never retests sectors once they have appeared on its Bad Sector Table . Soooo, all that is outstanding now is how to reset this dreaded table? Anyone? Ok, I realise the drive may well fail in the not too distant future, but given there is nothing of great value on the Computer it will be interesting to see . :) |
B.M. (505) | ||
| 745871 | 2009-02-09 11:10:00 | Install something like Speedfan, Everest or anything else that can read SMART data - check the "reallocated sector count" These are sectors which have been reallocated by the drive firmware itself. Much more accurate than any disk check program. If you see a lot of these, forget about the drive and get a new one The article is quite old, but basically the way a drive works is still the same, just with technology advancements, they get more data squeezed in, the head technology is meant to be better, and the drives are meant to last longer. Depending on the technology used will depend on where the heads come to a rest when shut down. If interested - this is tech stuff - but have a look at these Videos (www.youtube.com) - interesting about the bad block / sector lists on a drive ( near the end of the video Pt1 ) Most drives now park their heads off the media on a special ramp, does this change anything? |
Agent_24 (57) | ||
| 745872 | 2009-02-09 12:28:00 | Question about SMART: If I enable it on PC1, then move the HDD to PC2, will the SMART information still be stored on the drive, or is it stored somewhere else? |
Chilling_Silence (9) | ||
| 745873 | 2009-02-09 13:25:00 | SMART data is stored on the drive itself | Agent_24 (57) | ||
| 745874 | 2009-02-09 18:16:00 | Install something like Speedfan, Everest or anything else that can read SMART data - check the "reallocated sector count" These are sectors which have been reallocated by the drive firmware itself . Much more accurate than any disk check program . If you see a lot of these, forget about the drive and get a new one Most drives now park their heads off the media on a special ramp, does this change anything? Thanks for that Agent, I'll follow that up . However, it raises a couple of other questions . 1: Wouldn't Seatools have done this when it passed the "SMART" test? :confused: 2: What is an acceptable number of reallocations given that the Manufactures expect this to happen? :confused: |
B.M. (505) | ||
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