Re: Little "shadow" versions of .doc files transferred to Windows??
From: John McGhie (john_at_mcghie.name)
Date: 12/06/04
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Date: Mon, 06 Dec 2004 15:48:29 +1100
Hi Bill:
Ah hah! Well, this is fascinating. I did not see these "dot-underscore"
files at all until I turned on "Display and manage web files and folders
individually" in Windows XP SP2 Explorer Tools>Options...
Once I enabled that setting, I saw a file name prefixed with dot-undersore
for the file that I added from the Mac across the network by Copy and Paste.
The file I Dragged in didn't get one.
It appears that the file concerned is a "lock" file placed by 'something" to
indicated that the file has an edit lock on it. In this case, the file was
a Word document and I had used Get Info on it from the Mac side. That would
have attached an Edit Lock to the file name.
Disconnecting the Mac from the Windows box did not make the file go away.
So I don't think it IS a Resource Fork. I think it is a lock file. And now
I am as confused as you...
Cheers
On 5/12/04 7:13 PM, in article BDD80332.1E55B%bill@nospam.net, "Bill
Weylock" <bill@nospam.net> wrote:
> It does help, John.
>
> The remaining problem for me is that I still donıt have a reference for the
> little resource files on the Windows side. Since heıs a Mac developer, he
> knows about resource and data forks. He just seems to have no exposure to what
> can happen on a Windows system when they go over there.
>
> If I connect from my Windows XP SP2 laptop to the Mac, I pull files over as
> one file. If, however, I connect from the Mac and drop files into the folders
> that appear on the Windows server, I get the two bits.
>
> By the way, deleting the data fork has no bearing on whether the resource file
> stays or goes. Itıs there just like any other document, except useless and
> unreadable, until I throw it away.
>
> Really appreciate the time and trouble. I just wish I could remember where the
> documentation is on this.
>
> Thanks again!
>
>
> Best,
>
>
> - Bill
>
>
> On 12/4/04 10:12 PM, in article BDD8F204.D930%john@mcghie.name, "John McGhie"
> <john@mcghie.name> wrote:
>
>> Hi Bill:
>>
>> He needs to read the documentation from Apple on High Performance File
>> System "Plus" -- HFS+, which is the most common file system on Macs.
>>
>> In this file system, each file is actually two components, the "Resource"
>> fork and the "Data" fork. See
>> http://developer.apple.com/technotes/tn/tn1150.html#HFSPlusBasics
>>
>> In Windows XP, the pair should appear and be managed as only one file, as
>> they do on the Mac. In older versions of Windows, you will see the two
>> components as separate files.
>>
>> The reason you need to delete them is that, if Windows deletes the Data
>> fork, it is now dissociated from the Resource fork, which will then hang
>> around forever. On Windows XP, each file will occupy a single block of disk
>> space and Windows does not know to delete it so it never will.
>>
>> Hope this helps
>>
>> On 5/12/04 3:38 AM, in article BDD727F5.1E534%bill@nospam.net, "Bill
>> Weylock" <bill@nospam.net> wrote:
>>
>>> Could one of you MVPs please confirm what I once read in a support file and
>>> cannot now find again?
>>>
>>> When I use a synch utility to synchronize a Mac folder to a Windows XP
>>> folder,
>>> Windows generates little 4k shadow versions of each .doc or .xls file. There
>>> will be OriginalMacFile.doc, which I can open and use with no problems, and
>>> also ._OriginalMacFile.doc, which cannot be opened and has no information
>>> OfficeXP can read.
>>>
>>> My recollection is that these little files are Windowıs way of handling
>>> ³resource² information in Mac files.
>>>
>>> I also believe that, once generated, they are useless to both Windows and
>>> Macs. The only thing to be done with them is throw them away.
>>>
>>> Iım asking because the very nice young guy who is writing Synk does not want
>>> to include a deletion mechanism for these little boogers until he has
>>> confirmation that they are useless from someone with more creds than I have.
>>>
>>> Is there anything to be said for NOT deleting those little guys? For
>>> instance,
>>> could they have some residual utility if returned to the Mac side? I doubt
>>> it,
>>> but I guess Iıd have the same scruple if I were writing software.
>>>
>>> A link to an MVP file or MS support file would be terrific of course. My
>>> searches have not got me anywhere.
>>>
>>> Thanks!
>>>
>>>
>>> Best,
>>>
>>>
>>> - Bill
>>>
>>>
>>> Panther 10.3.6
>>> Office 2004
>>>
>>>
>>
>
>
>
>
> Panther 10.3.6
> Office 2004
>
>
-- Please reply to the newsgroup to maintain the thread. Please do not email me unless I ask you to. John McGhie <john@mcghie.name> Consultant Technical Writer Sydney, Australia +61 4 1209 1410
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