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Reduce fan noise on PowerBooks
Authored by: gmartin on Jun 29, '05 10:05:56PM

I'd be worried about "chugging noises" from your PB hard disk, if they are anything like the chugging noises** I had six weeks or so ago I'd run some disk checks. Something like Drive 10 or Disk Warrior if you have them, alternatively Drive Genius allows limited use of it for free/evaluation. Run a surface scan and make sure you don't have any bad blocks. During the scan you may hear more chugging noises from the drive doing multiple retries in the failing areas and see the scan slowing down to a crawl - not a good sign. I had both symptoms and some gradual loss*** of seemingly random files (not enough to kill the OS). This persisted even after several complete zero erases and re-installs - a fatal sign. Luckily it happened _just_ within warranty and an Apple engineer came out to fix it last week. Disappointingly, Disk Utility S.M.A.R.T status was still saying verified even though the disk was clearly in trouble.

** if you're old enough to remember floppy disk drives ;-) the noise is a quieter version of when floppys get read/write errors (chuggggg, chuggggg, pause, chuggggg, chuggggg, pause etc).

*** files would still be listed but would report input/ouput errors when read - I came up with some simple scripts to scan a disk for such issues if folks are interested.



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Reduce fan noise on PowerBooks
Authored by: WAW401 on Jun 29, '05 10:47:16PM

I would be interested in the scripts you referred to ... I'm in the middle of a reformat & reinstall of 10.3.9 b/c my 10.4.1 client acting as a lightweight fileserver just had the HD crap out. The HD couldn't mount, even as a FW drive in TargetDisk Mode. (DiskRescue did a very decent job of recovery)

I got input/output errors on an rsync 2 days earlier and wish I recognized the problem for what it was.



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