How many bad blocks can I live with on external?

Discussion in 'Mac Accessories' started by Dale Cooper, Dec 19, 2008.

  1. Dale Cooper macrumors regular

    Dale Cooper

    Joined:
    Sep 20, 2005
    #1
    Hi,
    after noticing a that time machine has been really slow to back up lately (before 10.5.6 by the way), I started DiskWarrior and took a Disk Integrity check. After 15+ hours its not even halfway through on a 500gb disk, but its so far found 223 000 bad blocks (out of 282 000 000).
    How BAD is this - should I stop trusting it for backing up important stuff (I have the most important stuff on two externals allready)? Is there anything that can be done with bad blocks? Thanks!
     
  2. garybUK Guest

    garybUK

    Joined:
    Jun 3, 2002
    #2
    In my experience bad blocks are systematic of either a board failure on the drive or something wrong with the disks themselves. I wouldn't trust it for anything, infact i'd recover your data from it asap and replace the disk. I had a friends laptop drive do this and took me hours to recover the data onto a new disk for him.
     
  3. Dale Cooper thread starter macrumors regular

    Dale Cooper

    Joined:
    Sep 20, 2005
    #3
    Ok, thanks for quick reply! Was afraid I had to replace it - guess I have a new item on my wish list:rolleyes:
     

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