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Re: Corrupted HD

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<mcmurtrie-BAB415.23084511112013@c-61-68-245-199.per.connect.net.au>,
Kevin McMurtrie <mcmurtrie@pixelmemory.us> wrote:

> > > > We have a white MacBook running 10.6.8. I ran Disk Utility Verify Disk
> > > > because it was running really slow. DU sayd the disk was corrupted and
> > > > need to be repaired. What are my options? I'm pretty sure this laptop
> > > > didn't come with install disks, so I have nothing from which to boot
> > > > except the install disks that came with my MBP that have 10.6. Will that
> > > > work? 
> > > > TIA, Ron
> > > 
> > > I'd only use DiskWarrior as a last resort after everything is backed up.
> > > It's hacker-grade software that often refuses to run due to ridiculously
> > > bad assumptions about disk access timing.
> > > 
> > > The same software that Disk Utility runs is available on the command 
> > > line.  Boot into "single user mode" by holding down cmd-S while booting.
> > > Single user mode starts with the disk mounted read-only so the OS won't
> > > interfere with repairs.  Type this:
> > > 
> > > fsck -fy
> > > 
> > > When it's done, press ctrl-D to resume normal booting.  If it fails you
> > > can try running fsck again.
> > 
> > Rubbish. Diskwarrior often succeeds where Disk Utility failed, IME.
> 
> DiskWarrior incorrectly assumes that latency is caused by I/O errors, it 
> incorrectly assumes that swapping will crash your computer, and it has 
> to skip some steps on disk images to avoid crashing.  That means it 
> can't repair large local Time Machine disks (aborts of virtual memory) 
> and it can't reliably do any remote Time Machine disks (aborts on 
> latency).

nonsense. 

the only issue is that diskwarrior is still a 32 bit app, so it's
possible that some large drives with a *lot* of files can fill that
memory space. most people do not encounter this.

they've been working on a 64 bit version for a while and it takes time
to do it properly. 

> Early versions of 4.2 had a tendency to cause system crashes.  That 
> would often corrupt the startup disk while attempting to fix an external 
> disk.  Nice, eh?

nonsense. 

disk warrior does not write to the drive while reconstructing the
directory. the *only* time it modifies the hard drive is if the user
decides to write the newly rebuilt directory. that is *optional*.

the user can preview the drive using the new directory before writing
it out, or they can decide to not write it out at all. in the latter
case, the drive will be *exactly* the same as it was before the process
began. 

> Yes, DW can fix some things that fsck_hfs can't but that doesn't mean it 
> isn't hacky crap.

it definitely is not hacky crap. far from it.

it's one of the most amazing apps on the mac.

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Thread

Corrupted HD RonTheGuy@null.invalid (Ron) - 2013-11-11 17:00 -0800
  Re: Corrupted HD Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-11 20:20 -0500
  Re: Corrupted HD nospam <nospam@nospam.invalid> - 2013-11-11 21:23 -0500
    Re: Corrupted HD RonTheGuy@null.invalid (Ron) - 2013-11-11 21:27 -0800
      Re: Corrupted HD nospam <nospam@nospam.invalid> - 2013-11-12 00:36 -0500
      Re: Corrupted HD me@home.spamsucks.ca (Király) - 2013-11-12 06:06 +0000
        Re: Corrupted HD "M. John Matlaw" <nouser@invalid.com> - 2013-11-12 15:05 -0500
  Re: Corrupted HD Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-11-11 20:51 -0800
    Re: Corrupted HD nospam <nospam@nospam.invalid> - 2013-11-12 00:26 -0500
    Re: Corrupted HD jamiekg@wizardling.geek.nz (Jamie Kahn Genet) - 2013-11-12 19:46 +1300
      Re: Corrupted HD Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-11-11 23:08 -0800
        Re: Corrupted HD nospam <nospam@nospam.invalid> - 2013-11-12 02:46 -0500
          Re: Corrupted HD George Kerby <ghost_topper@hotmail.com> - 2013-11-12 07:55 -0600
          Re: Corrupted HD Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2013-11-12 21:43 -0800
        Re: Corrupted HD George Kerby <ghost_topper@hotmail.com> - 2013-11-12 07:55 -0600
        Re: Corrupted HD "John Varela" <newlamps@verizon.net> - 2013-11-12 20:12 +0000
    Re: Corrupted HD Lewis <g.kreme@gmail.com.dontsendmecopies> - 2013-11-13 00:51 +0000
  Re: Corrupted HD Laszlo Lebrun <lazlo_lebrun@laszlomail.com> - 2013-11-12 21:22 +0100
    Re: Corrupted HD Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-12 23:02 -0500
      Re: Corrupted HD Laszlo Lebrun <lazlo_lebrun@laszlomail.com> - 2013-11-13 05:26 +0100
        Re: Corrupted HD Wes Groleau <Groleau+news@FreeShell.org> - 2013-11-13 00:47 -0500
          Re: Corrupted HD Laszlo Lebrun <lazlo_lebrun@laszlomail.com> - 2013-11-13 21:00 +0100

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