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YY-CHR can clear your chr file
http://forums.nesdev.com/viewtopic.php?f=21&t=12033
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Author:  nIghtorius [ Wed Nov 19, 2014 8:03 am ]
Post subject:  Re: YY-CHR can clear your chr file

I see you are using windows 8.1, have you tried checking the previous version tab in de properties of your project folder? (I am talking about shadow copies here)
I have configured my PC to make at least 3 shadowcopies per day of all my folders. ( and a shadow copy only takes 1 or 2 seconds to complete )

It is a huge lifesaver.. especially in situations like yours.

edit--
if nothing turns up doesn't it isn't there.

go to command prompt (administrative) and use the following command

vssadmin list shadows /for=<driveletter>, ex: vssadmin list shadows /for=c:

A typical result looks like this.
Code:
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2013 Microsoft Corp.

Contents of shadow copy set ID: {e1abd399-3319-4395-bf66-1501bb6da274}
   Contained 1 shadow copies at creation time: 23-09-2014 12:53:54
      Shadow Copy ID: {f8aa8c3e-9164-4eab-9756-5d391953e084}
         Original Volume: (C:)\\?\Volume{88940d3b-ed17-11e1-be66-806e6f6e6963}\
         Shadow Copy Volume: \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy1
         Originating Machine: ScrewupWin8.HMComputers.local
         Service Machine: ScrewupWin8.HMComputers.local
         Provider: 'Microsoft Software Shadow Copy provider 1.0'
         Type: ClientAccessible
         Attributes: Persistent, Client-accessible, No auto release, No writers,
 Differential

Contents of shadow copy set ID: {bb57cc0d-320a-4b3a-9828-01891adfcdba}
   Contained 1 shadow copies at creation time: 29-10-2014 04:49:21
      Shadow Copy ID: {9e88c4c9-d97e-4b9d-9993-4e2cf97959ae}
         Original Volume: (C:)\\?\Volume{88940d3b-ed17-11e1-be66-806e6f6e6963}\
         Shadow Copy Volume: \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy9
         Originating Machine: ScrewupWin8.HMComputers.local
         Service Machine: ScrewupWin8.HMComputers.local
         Provider: 'Microsoft Software Shadow Copy provider 1.0'
         Type: ClientAccessibleWriters
         Attributes: Persistent, Client-accessible, No auto release, Differentia
l, Auto recovered

Contents of shadow copy set ID: {5a18cf92-fc3f-452c-b226-f47cd3be71bf}
   Contained 1 shadow copies at creation time: 03-11-2014 14:51:12
      Shadow Copy ID: {57959b57-a50e-4654-8619-fc7a80a79190}
         Original Volume: (C:)\\?\Volume{88940d3b-ed17-11e1-be66-806e6f6e6963}\
         Shadow Copy Volume: \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy10
         Originating Machine: ScrewupWin8.HMComputers.local
         Service Machine: ScrewupWin8.HMComputers.local
         Provider: 'Microsoft Software Shadow Copy provider 1.0'
         Type: ClientAccessibleWriters
         Attributes: Persistent, Client-accessible, No auto release, Differentia
l, Auto recovered

Contents of shadow copy set ID: {0be64c34-4f93-423b-b959-d9b6d4c8e52d}
   Contained 1 shadow copies at creation time: 11-11-2014 03:42:05
      Shadow Copy ID: {b523243b-d176-4de6-9a01-2afbe1d6c180}
         Original Volume: (C:)\\?\Volume{88940d3b-ed17-11e1-be66-806e6f6e6963}\
         Shadow Copy Volume: \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy11
         Originating Machine: ScrewupWin8.HMComputers.local
         Service Machine: ScrewupWin8.HMComputers.local
         Provider: 'Microsoft Software Shadow Copy provider 1.0'
         Type: ClientAccessibleWriters
         Attributes: Persistent, Client-accessible, No auto release, Differentia
l, Auto recovered


look at "Creation Time" and "Shadow Copy Volume"

to "mount" a shadow copy you can use the MKLINK command.
for example:

MKLINK /D c:\shadowcopy11 \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy11

and if your files are at: c:\users\user\documents\projects\nes for example. you can go to the shadowcopy variant using
CD c:\shadowcopy11\users\user\documents\projects\nes

you cannot go to C:\ShadowCopy11 directly.

I hope this helps.

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