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Author Topic: what is this PARC File (.parc)  (Read 1535 times)

neil

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what is this PARC File (.parc)
« on: May 27, 2022, 09:55:08 AM »

There are some files in my drive I don't know when they were created, I tried google search without any result for this file type. Anyone here got any ideas?  :shrug2:
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Bowdon

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Re: what is this PARC File (.parc)
« Reply #1 on: May 27, 2022, 01:46:27 PM »

What directory are they in?
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neil

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Re: what is this PARC File (.parc)
« Reply #2 on: May 28, 2022, 02:34:05 AM »

What directory are they in?
in my C drive
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jelv

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Re: what is this PARC File (.parc)
« Reply #3 on: May 28, 2022, 09:18:01 AM »

In the root directory of C: or elsewhere?

How big are they?
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neil

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Re: what is this PARC File (.parc)
« Reply #4 on: May 28, 2022, 10:32:00 AM »

In the root directory of C: or elsewhere?

How big are they?

Yes, in root directory of C where all other folders are program files windows etc and size is 13KB 23KB and 41KB. Three files
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petef

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Re: what is this PARC File (.parc)
« Reply #5 on: May 28, 2022, 11:05:45 AM »

In Linux I would run strings on all the program executables and grep -iw parc

The Windows equivalents may be available in WSL 2, Cygwin, MSYS2, etc. I personally use Cygwin and have no experience of Microsoft's WSL.

Another tack would be to look for a program starting with the letters P A R or A R C. Click the Windows Start button and type in the letters to see what completions you get.
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jelv

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Re: what is this PARC File (.parc)
« Reply #6 on: May 28, 2022, 04:18:14 PM »

If you look at the properties of the files, do the creation dates give any clues?
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Weaver

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Re: what is this PARC File (.parc)
« Reply #7 on: May 28, 2022, 11:41:37 PM »

I would rename them all to something like xxx.parc_renamed. Then see if anything misbehaves. If not then you don’t need them, but you can soon rename them back. If they’re to do with anything malicious then the badness won’t be able to find what it needs, so hurrah.
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neil

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Re: what is this PARC File (.parc)
« Reply #8 on: May 29, 2022, 10:15:40 AM »

here is screenshot
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neil

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Re: what is this PARC File (.parc)
« Reply #9 on: May 29, 2022, 10:18:39 AM »

In Linux I would run strings on all the program executables and grep -iw parc

The Windows equivalents may be available in WSL 2, Cygwin, MSYS2, etc. I personally use Cygwin and have no experience of Microsoft's WSL.

Another tack would be to look for a program starting with the letters P A R or A R C. Click the Windows Start button and type in the letters to see what completions you get.

I am not a Linux user and I don't know how to use command line other than copy pasting from the internet.
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mofa2020

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Re: what is this PARC File (.parc)
« Reply #10 on: May 29, 2022, 11:39:25 AM »

This is the only thing I found that might be related to .parc extension:

"Parchive (a portmanteau of parity archive, and formally known as Parity Volume Set Specification[1][2]) is an erasure code system that produces par files for checksum verification of data integrity, with the capability to perform data recovery operations that can repair or regenerate corrupted or missing data.

Parchive was originally written to solve the problem of reliable file sharing on Usenet,[3] but it can be used for protecting any kind of data from data corruption, disc rot, bit rot, and accidental or malicious damage. Despite the name, Parchive uses more advanced techniques (specifically error correction codes) than simplistic parity methods of error detection."

https://en.wikipedia.org/wiki/Parchive
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Bowdon

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Re: what is this PARC File (.parc)
« Reply #11 on: May 29, 2022, 12:17:15 PM »

I've used par files before. But they are usually .par and tend to be with .rar compression files. So if there are multiple .rar files it can make some .par files to repair the .rar file.

Have you checked the health of the hard drive?

I remember many years ago, back in the Win98, WinME days I had to keep reinstalling the OS as the hard drive would become corrupted. It would put weirdly named files on the hard drive that couldn't be opened. I wonder if this might be what is happening here?

Alternatively they could be left over files from a game or program that was installing, uninstalling or updating.

I wonder if a disk scan would work, or the chkdisk command etc. As long as the files aren't taking over then it's probably nothing to worry about in the near future.

Edit: Have you ever used a program called PowerArchiver ?
« Last Edit: May 29, 2022, 12:23:32 PM by Bowdon »
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neil

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Re: what is this PARC File (.parc)
« Reply #12 on: May 29, 2022, 12:56:37 PM »

I've used par files before. But they are usually .par and tend to be with .rar compression files. So if there are multiple .rar files it can make some .par files to repair the .rar file.

Have you checked the health of the hard drive?

I remember many years ago, back in the Win98, WinME days I had to keep reinstalling the OS as the hard drive would become corrupted. It would put weirdly named files on the hard drive that couldn't be opened. I wonder if this might be what is happening here?

Alternatively they could be left over files from a game or program that was installing, uninstalling or updating.

I wonder if a disk scan would work, or the chkdisk command etc. As long as the files aren't taking over then it's probably nothing to worry about in the near future.

Edit: Have you ever used a program called PowerArchiver ?
ssd health is fine and no never used PowerArchiver before
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jelv

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Re: what is this PARC File (.parc)
« Reply #13 on: May 29, 2022, 09:47:28 PM »

Not an answer, but you are not the only person with this query: https://www.reddit.com/r/pchelp/comments/ueqdkj/help_for_file_parc/

Do any of the results from this search mention anything familiar?

https://www.google.com/search?q=%22.parc%22+files
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neil

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Re: what is this PARC File (.parc)
« Reply #14 on: May 30, 2022, 04:46:09 AM »

Not an answer, but you are not the only person with this query: https://www.reddit.com/r/pchelp/comments/ueqdkj/help_for_file_parc/

Do any of the results from this search mention anything familiar?

https://www.google.com/search?q=%22.parc%22+files

wow
one more person with same files as me.

no

 I think these have something to do with desktop windows manager and owner is dwm-1
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