Messages in this thread |  | | From | Samium Gromoff <> | | Subject | Re: [OT] Howl of soul... | | Date | Wed, 26 Sep 2001 03:01:38 +0000 (UTC) |
| |
> A low-level format (using IBM DFT) is going to *silently* remap bad > parts of the disk. It's only going to complain once it's no longer > possible to remap the bad sectors. So, just because the low-level format > doesn't complain does not mean that there is no media degradation! 1. how to find problematic blocks? - just read, and if read fails goto 2. (i.e. we found no new bad sectors) - goto 2 on the sectors reported before as bad. (i.e. drive remembers sectors on which he had failures) 2. what to do when i found problematic sector? - just see if it still usable. 2a. i write to the sector, and after that i read crap. - sector is bad! should remap it! 2b. i can write data to the sector, then reads goes ok. - hmm, i think that was kinda magnetetic storm, sector is still usable. do not remapping.
in my case there was just magnetic storm, so the sector can be safely read/written again.
cheers, Sam
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |