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digitalmars.D - Mono corrupted D files

reply "AsmMan" <jckj33 gmail.com> writes:
Something very strange happened 2/3 days ago. Two of my D files 
of the project I was working on got all values replaced by 0 
(that's what I seen rather D code if I open the file with a hex 
debugger). The file size of both files keep intact although. And 
no, I have no backup of these files. I had a old copy of it on a 
external hard drive but I needed to format it to use in something 
else and didn't put my files before it...

Instead of turn off my windows machine I always hirbenate it and 
left open all stuff and then I just back quickly to point where I 
was on. That day, when I logged on system I noticied first 
non-usual behavior: the machine looked like I had restarted it 
instead of hibernate. All stuff I left open (including mono) 
wasn't open anymore. I find it strage but moved on. But to my 
surprise when I open mono, the "recent projects" always available 
on left menu bar was empty. Just like I had installed mono not 
used yet. I open my project directly by clicking on "open" and 
navigating to folder of projec and then I see the two of main 
project files with a values set to zero.

Can some Mono expected help me?
My question is: can I recovery these files? or what remains to me 
is cry?
restore the system didn't helped (and I neither expected to but I 
tried)

Not sure if it is related: that day my machine had no a network 
connection.
Sep 03 2014
next sibling parent reply "AsmMan" <jckj33 gmail.com> writes:
On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D files 
 of the project I was working on got all values replaced by 0 
 (that's what I seen rather D code if I open the file with a hex 
 debugger). The file size of both files keep intact although. 
 And no, I have no backup of these files. I had a old copy of it 
 on a external hard drive but I needed to format it to use in 
 something else and didn't put my files before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to but 
 I tried)

 Not sure if it is related: that day my machine had no a network 
 connection.


If it is relevant, I'm using Windows 8.1 64-bit
Sep 03 2014
parent reply "Israel" <tl12000 live.com> writes:
On Wednesday, 3 September 2014 at 21:46:54 UTC, AsmMan wrote:

 On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D 
 files of the project I was working on got all values replaced 
 by 0 (that's what I seen rather D code if I open the file with 
 a hex debugger). The file size of both files keep intact 
 although. And no, I have no backup of these files. I had a old 
 copy of it on a external hard drive but I needed to format it 
 to use in something else and didn't put my files before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to 
 but I tried)

 Not sure if it is related: that day my machine had no a 
 network connection.


 If it is relevant, I'm using Windows 8.1 64-bit


Its hard to say friend. Im not exactly a mono "Expert" but i
would assume what happened was...

--You put your system to hibernate
--The computer somehow lost power and the memory dump was
diminished.
--When you turned your computer back on, that dump was corrupted
and somehow affected your files.

zip the files up and uplaod them, maybe someone here can help
salvage what is left?
Sep 03 2014
parent "AsmMan" <jckj33 gmail.com> writes:
On Thursday, 4 September 2014 at 00:37:52 UTC, Israel wrote:

 On Wednesday, 3 September 2014 at 21:46:54 UTC, AsmMan wrote:

 On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D 
 files of the project I was working on got all values replaced 
 by 0 (that's what I seen rather D code if I open the file 
 with a hex debugger). The file size of both files keep intact 
 although. And no, I have no backup of these files. I had a 
 old copy of it on a external hard drive but I needed to 
 format it to use in something else and didn't put my files 
 before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains 
 to me is cry?
 restore the system didn't helped (and I neither expected to 
 but I tried)

 Not sure if it is related: that day my machine had no a 
 network connection.


 If it is relevant, I'm using Windows 8.1 64-bit


 Its hard to say friend. Im not exactly a mono "Expert" but i
 would assume what happened was...

 --You put your system to hibernate
 --The computer somehow lost power and the memory dump was
 diminished.
 --When you turned your computer back on, that dump was corrupted
 and somehow affected your files.


I think it was what happend... instead of the default 
configuration to after x minutes (if no one is using the 
computer) it was defined to "never" (at least, until baterry 
power is < 10%) hibernate. If so, there's nothing which I can do, 
isn't? :( I had a very small hope the windows restore could 
restore it but didn't. I'll give a try to softwares like recuva. 
Who knows if I may find the files in there for any reason. I read 
http://security.stackexchange.com/questions/49166/is-filling-up-the-empty-space-in-a-disk-with-any-data-enough
measure-against-fil 
one of the answer said it is easily recoverable. Let's see how 
"easily" it is without this special machine he nentioned.


 zip the files up and uplaod them, maybe someone here can help
 salvage what is left?


I don't know if it can be useful. The files is nothing but 
zeroes. Check out:

http://oi58.tinypic.com/51zfyh.jpg

This file has 18k just of zeroes.
Sep 03 2014
prev sibling next sibling parent reply "Sativa" <Sativa Indica.org> writes:
On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D files 
 of the project I was working on got all values replaced by 0 
 (that's what I seen rather D code if I open the file with a hex 
 debugger). The file size of both files keep intact although. 
 And no, I have no backup of these files. I had a old copy of it 
 on a external hard drive but I needed to format it to use in 
 something else and didn't put my files before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to but 
 I tried)

 Not sure if it is related: that day my machine had no a network 
 connection.


You have probably already lost the data, but it is possible that 
a different copy of the file is located on the drive. If you've 
restored a backup you are probably screwed.

Sometimes programs will store files in a temp directory or when 
they save the file it won't overwrite the old one, but delete it 
and make a new one.

These can be recovered in many cases as long as the data hasn't 
be overwritten by other files. They may not exist on the file 
system but in the free space, you have to use an undelete program 
that does a low level scan of the file system for deleted files.
Sep 03 2014
parent "AsmMan" <jckj33 gmail.com> writes:
On Thursday, 4 September 2014 at 02:22:27 UTC, Sativa wrote:

 On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D 
 files of the project I was working on got all values replaced 
 by 0 (that's what I seen rather D code if I open the file with 
 a hex debugger). The file size of both files keep intact 
 although. And no, I have no backup of these files. I had a old 
 copy of it on a external hard drive but I needed to format it 
 to use in something else and didn't put my files before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to 
 but I tried)

 Not sure if it is related: that day my machine had no a 
 network connection.


 You have probably already lost the data, but it is possible 
 that a different copy of the file is located on the drive.


How can I check it?


If  you've restored a backup you are probably screwed.


Which backup are you talking about? the windows' native one? if 
so, I didn't because it isn't turned on.


 Sometimes programs will store files in a temp directory or when 
 they save the file it won't overwrite the old one, but delete 
 it and make a new one.


did you mean to I delete the .d file and open mono and it may 
make a new copy from temporary directory?


 These can be recovered in many cases as long as the data hasn't 
 be overwritten by other files. They may not exist on the file 
 system but in the free space, you have to use an undelete 
 program that does a low level scan of the file system for 
 deleted files.


What software do you recommend? I tried recuva but it didn't show 
even a single d file...
Sep 03 2014
prev sibling next sibling parent reply Etienne Cimon <etcimon gmail.com> writes:
On 2014-09-03 17:13, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D files of the
 project I was working on got all values replaced by 0 (that's what I
 seen rather D code if I open the file with a hex debugger). The file
 size of both files keep intact although. And no, I have no backup of
 these files. I had a old copy of it on a external hard drive but I
 needed to format it to use in something else and didn't put my files
 before it...


http://www.dtidata.com/resourcecenter/2007/05/01/file-recovery-sector-editor-find-lost-data/

If you remember an exact string from the document and some bytes are 
still floating around somewhere on the drive, this method will find it
Sep 03 2014
parent reply "AsmMan" <jckj33 gmail.com> writes:
On Thursday, 4 September 2014 at 03:04:12 UTC, Etienne Cimon
wrote:

 On 2014-09-03 17:13, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D 
 files of the
 project I was working on got all values replaced by 0 (that's 
 what I
 seen rather D code if I open the file with a hex debugger). 
 The file
 size of both files keep intact although. And no, I have no 
 backup of
 these files. I had a old copy of it on a external hard drive 
 but I
 needed to format it to use in something else and didn't put my 
 files
 before it...


 http://www.dtidata.com/resourcecenter/2007/05/01/file-recovery-sector-editor-find-lost-data/

 If you remember an exact string from the document and some 
 bytes are still floating around somewhere on the drive, this 
 method will find it


I was so happy when my search got a result... but these results
are very small blocks of an old version of the files I lost. One
of the files had around 800 lines I can find say, 150/180 lines
using it. Now I know how this called:

http://en.wikipedia.org/wiki/Zero_byte_file
Sep 05 2014
parent reply Etienne Cimon <etcimon gmail.com> writes:
On 2014-09-05 21:48, AsmMan wrote:

 I was so happy when my search got a result... but these results
 are very small blocks of an old version of the files I lost. One
 of the files had around 800 lines I can find say, 150/180 lines
 using it. Now I know how this called:

 http://en.wikipedia.org/wiki/Zero_byte_file


That's still very good, you could also repeat the search for other 
strings from the blocks you lost, they may be in different versions and 
different blocks.
Sep 06 2014
parent "AsmMan" <jckj33 gmail.com> writes:
On Saturday, 6 September 2014 at 17:51:50 UTC, Etienne Cimon 
wrote:

 On 2014-09-05 21:48, AsmMan wrote:

 I was so happy when my search got a result... but these results
 are very small blocks of an old version of the files I lost. 
 One
 of the files had around 800 lines I can find say, 150/180 lines
 using it. Now I know how this called:

 http://en.wikipedia.org/wiki/Zero_byte_file


 That's still very good, you could also repeat the search for 
 other strings from the blocks you lost, they may be in 
 different versions and different blocks.


I gave up to recovery them. No idea why but it does show only old 
versions of the file instead of the most recent. And they are 
small blocks which aren't more than 20% of the file starting from 
line 1. I can't find any part of these 80% in nowhere (I read and 
compared all results).
I got in touch to Mono for D's author and there is no such an 
auto backup on Mono/Xamarim. He recommended another undelete tool 
which didn't worked for me too.  This time I'll do more than one 
backup and active the windows' native one.

Big thanks for everyone which tried to help me.

I'm already reinstalling XS (btw, I asked for windows for desktop 
version and now I'm installing all platforms supported by xamarim 
stuido which I'm not going to develop to).
Sep 06 2014
prev sibling next sibling parent reply Bruno Medeiros <bruno.do.medeiros+dng gmail.com> writes:
On 03/09/2014 22:13, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D files of the
 project I was working on got all values replaced by 0 (that's what I
 seen rather D code if I open the file with a hex debugger). The file
 size of both files keep intact although. And no, I have no backup of
 these files. I had a old copy of it on a external hard drive but I
 needed to format it to use in something else and didn't put my files
 before it...

 Instead of turn off my windows machine I always hirbenate it and left
 open all stuff and then I just back quickly to point where I was on.
 That day, when I logged on system I noticied first non-usual behavior:
 the machine looked like I had restarted it instead of hibernate. All
 stuff I left open (including mono) wasn't open anymore. I find it strage
 but moved on. But to my surprise when I open mono, the "recent projects"
 always available on left menu bar was empty. Just like I had installed
 mono not used yet. I open my project directly by clicking on "open" and
 navigating to folder of projec and then I see the two of main project
 files with a values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to me is cry?
 restore the system didn't helped (and I neither expected to but I tried)

 Not sure if it is related: that day my machine had no a network connection.


Does Mono have a "local history" for files in Mono projects? Something 
like an automatic version history that keep tracks of the last X changes 
made to the file?

-- 
Bruno Medeiros
https://twitter.com/brunodomedeiros
Sep 04 2014
parent "AsmMan" <jckj33 gmail.com> writes:
On Thursday, 4 September 2014 at 15:52:57 UTC, Bruno Medeiros 
wrote:

 On 03/09/2014 22:13, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D 
 files of the
 project I was working on got all values replaced by 0 (that's 
 what I
 seen rather D code if I open the file with a hex debugger). 
 The file
 size of both files keep intact although. And no, I have no 
 backup of
 these files. I had a old copy of it on a external hard drive 
 but I
 needed to format it to use in something else and didn't put my 
 files
 before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left
 open all stuff and then I just back quickly to point where I 
 was on.
 That day, when I logged on system I noticied first non-usual 
 behavior:
 the machine looked like I had restarted it instead of 
 hibernate. All
 stuff I left open (including mono) wasn't open anymore. I find 
 it strage
 but moved on. But to my surprise when I open mono, the "recent 
 projects"
 always available on left menu bar was empty. Just like I had 
 installed
 mono not used yet. I open my project directly by clicking on 
 "open" and
 navigating to folder of projec and then I see the two of main 
 project
 files with a values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to 
 but I tried)

 Not sure if it is related: that day my machine had no a 
 network connection.


 Does Mono have a "local history" for files in Mono projects? 
 Something like an automatic version history that keep tracks of 
 the last X changes made to the file?


I asked on xamarim studio forum but I think there's no such a 
feature. Windows does, but it wasn't turned on at time.
Sep 05 2014
prev sibling next sibling parent reply "AsmMan" <jckj33 gmail.com> writes:
Does anyone knows if the Mono for D is active on this forum? or 
even knows how can I contact he? I can't find any email/web 
page...

Probably he knows if there's a way to get back this zero-ed 
files. Get them back by reading from a hex debugger was the 
closest I did so far but as it just show blocks of the file (and 
with repeats and a lot of parts missing) a rewriter is probably 
better.
Sep 05 2014
parent "Dicebot" <public dicebot.lv> writes:
On Saturday, 6 September 2014 at 02:03:00 UTC, AsmMan wrote:

 Does anyone knows if the Mono for D is active on this forum? or 
 even knows how can I contact he? I can't find any email/web 
 page...

 Probably he knows if there's a way to get back this zero-ed 
 files. Get them back by reading from a hex debugger was the 
 closest I did so far but as it just show blocks of the file 
 (and with repeats and a lot of parts missing) a rewriter is 
 probably better.


https://github.com/aBothe/Mono-D
Sep 06 2014
prev sibling parent reply "Kapps" <opantm2+spam gmail.com> writes:
On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D files 
 of the project I was working on got all values replaced by 0 
 (that's what I seen rather D code if I open the file with a hex 
 debugger). The file size of both files keep intact although. 
 And no, I have no backup of these files. I had a old copy of it 
 on a external hard drive but I needed to format it to use in 
 something else and didn't put my files before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to but 
 I tried)

 Not sure if it is related: that day my machine had no a network 
 connection.


Sounds like something crashed during the middle of a write. I 
would be surprised if this was related to Mono-D at all (I highly 
doubt that he changed the way files are saved). I'd also be 
concerned about the potential of a dying HDD, though that's less 
likely if this is the only thing that broke.
Sep 06 2014
parent "AsmMan" <jckj33 gmail.com> writes:
On Saturday, 6 September 2014 at 19:09:30 UTC, Kapps wrote:

 On Wednesday, 3 September 2014 at 21:13:31 UTC, AsmMan wrote:

 Something very strange happened 2/3 days ago. Two of my D 
 files of the project I was working on got all values replaced 
 by 0 (that's what I seen rather D code if I open the file with 
 a hex debugger). The file size of both files keep intact 
 although. And no, I have no backup of these files. I had a old 
 copy of it on a external hard drive but I needed to format it 
 to use in something else and didn't put my files before it...

 Instead of turn off my windows machine I always hirbenate it 
 and left open all stuff and then I just back quickly to point 
 where I was on. That day, when I logged on system I noticied 
 first non-usual behavior: the machine looked like I had 
 restarted it instead of hibernate. All stuff I left open 
 (including mono) wasn't open anymore. I find it strage but 
 moved on. But to my surprise when I open mono, the "recent 
 projects" always available on left menu bar was empty. Just 
 like I had installed mono not used yet. I open my project 
 directly by clicking on "open" and navigating to folder of 
 projec and then I see the two of main project files with a 
 values set to zero.

 Can some Mono expected help me?
 My question is: can I recovery these files? or what remains to 
 me is cry?
 restore the system didn't helped (and I neither expected to 
 but I tried)

 Not sure if it is related: that day my machine had no a 
 network connection.


 Sounds like something crashed during the middle of a write. I 
 would be surprised if this was related to Mono-D at all (I 
 highly doubt that he changed the way files are saved). I'd also 
 be concerned about the potential of a dying HDD, though that's 
 less likely if this is the only thing that broke.



My guess: I had a project opened on mono/xamarim studio where all 
the files has already been saved before I hibernate the computer. 
The computer somehow lost the power xamarim/mono tried to save it 
but computer aborted before making these files into 
zero-byte-file. A zero-byte-file does happen when a program is 
writing to a file but is prematurely aborted because this write 
isn't transfered to file at same time but to a "cache" instead of 
and at later time written in the file. The computerd turned off 
before it. I think the  Etienne Cimon's method didn't worked well 
because I used the computer after it. Maybe if I had kept the 
computer untouched I could get back them.
Sep 06 2014