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From: Slacker on 2 Apr 2010 19:34
iMac 21.5, SL 10.6.3.

I've been using a Samsung S2 640 GB portable USB hard drive for Time
Machine backups for about a month and it worked fine. Now, the drive is
no longer recognized by the computer and does not show in either Finder
or Disk Utility.

I switched cables and tried each of the four USB jacks in the computer
but no joy.

I plugged the S2 drive into another Mac and it shows up just fine. Also,
I have several other USB portable hard drives and they all show up fine
fine on the iMac.

But I need the S2 to work on the iMac-- as it had been for a month.

What am I doing wrong here?
From: Slacker on 3 Apr 2010 12:07
Slacker wrote:
> iMac 21.5, SL 10.6.3.
>
> I've been using a Samsung S2 640 GB portable USB hard drive for Time
> Machine backups for about a month and it worked fine. Now, the drive is
> no longer recognized by the computer and does not show in either Finder
> or Disk Utility.
>
> I switched cables and tried each of the four USB jacks in the computer
> but no joy.
>
> I plugged the S2 drive into another Mac and it shows up just fine. Also,
> I have several other USB portable hard drives and they all show up fine
> fine on the iMac.
>
> But I need the S2 to work on the iMac-- as it had been for a month.
>
> What am I doing wrong here?

Added info: On the iMac in question, the USB hard drive shows in the
system profiler-- though not in Finder or Disk Utility...
From: Jolly Roger on 3 Apr 2010 12:12
In article <hp7p4f$mvo$1(a)news.albasani.net>, Slacker <ezboy(a)beach.biz>
wrote:

> Slacker wrote:
> > iMac 21.5, SL 10.6.3.
> >
> > I've been using a Samsung S2 640 GB portable USB hard drive for Time
> > Machine backups for about a month and it worked fine. Now, the drive is
> > no longer recognized by the computer and does not show in either Finder
> > or Disk Utility.
> >
> > I switched cables and tried each of the four USB jacks in the computer
> > but no joy.
> >
> > I plugged the S2 drive into another Mac and it shows up just fine. Also,
> > I have several other USB portable hard drives and they all show up fine
> > fine on the iMac.
> >
> > But I need the S2 to work on the iMac-- as it had been for a month.
> >
> > What am I doing wrong here?
>
> Added info: On the iMac in question, the USB hard drive shows in the
> system profiler-- though not in Finder or Disk Utility...

Have you examined the system log to see what errors are there regarding
the hard drive (or I/O in general)?

--
Send responses to the relevant news group rather than email to me.
E-mail sent to this address may be devoured by my very hungry SPAM
filter. Due to Google's refusal to prevent spammers from posting
messages through their servers, I often ignore posts from Google
Groups. Use a real news client if you want me to see your posts.

JR
From: Slacker on 3 Apr 2010 19:24
Jolly Roger wrote:
> In article <hp7p4f$mvo$1(a)news.albasani.net>, Slacker <ezboy(a)beach.biz>
> wrote:
>
>> Slacker wrote:
>>> iMac 21.5, SL 10.6.3.
>>>
>>> I've been using a Samsung S2 640 GB portable USB hard drive for Time
>>> Machine backups for about a month and it worked fine. Now, the drive is
>>> no longer recognized by the computer and does not show in either Finder
>>> or Disk Utility.
>>>
>>> I switched cables and tried each of the four USB jacks in the computer
>>> but no joy.
>>>
>>> I plugged the S2 drive into another Mac and it shows up just fine. Also,
>>> I have several other USB portable hard drives and they all show up fine
>>> fine on the iMac.
>>>
>>> But I need the S2 to work on the iMac-- as it had been for a month.
>>>
>>> What am I doing wrong here?
>> Added info: On the iMac in question, the USB hard drive shows in the
>> system profiler-- though not in Finder or Disk Utility...
>
> Have you examined the system log to see what errors are there regarding
> the hard drive (or I/O in general)?
>

There's a ton of logs there-- not really sure where/what to look for.

One additional piece of data though: I bought another identical Samsung
S2 drive--- and it doesn't show up either.

I may need to pack the iMac up and cart it over to the nearest Apple
store-- thought with the iPad madness this weekend, I'll probably not be
able to get anywhere near the stgore-- much less the help counter...
From: Jolly Roger on 3 Apr 2010 20:37
In article <hp8in0$9fl$1(a)news.albasani.net>, Slacker <ezboy(a)beach.biz>
wrote:

> Jolly Roger wrote:
> > In article <hp7p4f$mvo$1(a)news.albasani.net>, Slacker <ezboy(a)beach.biz>
> > wrote:
> >
> >> Slacker wrote:
> >>> iMac 21.5, SL 10.6.3.
> >>>
> >>> I've been using a Samsung S2 640 GB portable USB hard drive for Time
> >>> Machine backups for about a month and it worked fine. Now, the drive is
> >>> no longer recognized by the computer and does not show in either Finder
> >>> or Disk Utility.
> >>>
> >>> I switched cables and tried each of the four USB jacks in the computer
> >>> but no joy.
> >>>
> >>> I plugged the S2 drive into another Mac and it shows up just fine. Also,
> >>> I have several other USB portable hard drives and they all show up fine
> >>> fine on the iMac.
> >>>
> >>> But I need the S2 to work on the iMac-- as it had been for a month.
> >>>
> >>> What am I doing wrong here?
> >> Added info: On the iMac in question, the USB hard drive shows in the
> >> system profiler-- though not in Finder or Disk Utility...
> >
> > Have you examined the system log to see what errors are there regarding
> > the hard drive (or I/O in general)?
>
> There's a ton of logs there-- not really sure where/what to look for.

There's only one system log. It's at /var/log/system.log.

> One additional piece of data though: I bought another identical Samsung
> S2 drive--- and it doesn't show up either.
>
> I may need to pack the iMac up and cart it over to the nearest Apple
> store-- thought with the iPad madness this weekend, I'll probably not be
> able to get anywhere near the stgore-- much less the help counter...

Could be a problem with the USB port (or hub if you have it connected to
a hub).

Have you tried switching to another USB port to see if it works on
another one?

--
Send responses to the relevant news group rather than email to me.
E-mail sent to this address may be devoured by my very hungry SPAM
filter. Due to Google's refusal to prevent spammers from posting
messages through their servers, I often ignore posts from Google
Groups. Use a real news client if you want me to see your posts.

JR
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