Since the tool can read from /dev directory directly, the tool should be able to read single file (image file of HDD).
I would recommend you to make image file/raw copy of your HDD with tools which can attempt to read from bad sector without crash or at least skip bad sector.
Since you're linux user and can use terminal, i would recommend you to use gddrescue.
Topic: Bitcoin private key/wallet.dat data recovery patch (Read 123 times)
That is likely to have unintended consequences for the while loop code:
Returning a negative value from refill_buf() (which it will be if (ret < 0))... then that evaluation could end up false depending on the value of bufpos and buffill... which might end the scan prematurely.
Additionally, I think that various values won't be updated properly (ie. buffill, fpos etc) and the program will just attempt to scan the same data over and over in what will effectively be an infinite loop.
Have you considered making a 1:1 image of the drive using a utility that can "ignore" read errors, and then working with the image file?
Alternatively, have you tried using an old version of PyWallet to scan that drive?
In any case, making an image and working with the image would be the sensible thing to do, to prevent any unintended overwriting of data on that disk.
Code:
while(flg || bufpos < buffill) {
Returning a negative value from refill_buf() (which it will be if (ret < 0))... then that evaluation could end up false depending on the value of bufpos and buffill... which might end the scan prematurely.
Additionally, I think that various values won't be updated properly (ie. buffill, fpos etc) and the program will just attempt to scan the same data over and over in what will effectively be an infinite loop.
Have you considered making a 1:1 image of the drive using a utility that can "ignore" read errors, and then working with the image file?
Alternatively, have you tried using an old version of PyWallet to scan that drive?In any case, making an image and working with the image would be the sensible thing to do, to prevent any unintended overwriting of data on that disk.
Quote
static int refill_buf(void) {
int ret;
//printf("refill_buf: fill = %i pos = %i\n", buffill, bufpos);
if(bufpos > BUF_WATERMARK) {
memcpy(buf, buf + BUF_SEGMENT, BUF_LEN-BUF_SEGMENT);
buffill -= BUF_SEGMENT;
bufpos -= BUF_SEGMENT;
}
if(buffill < BUF_LEN) {
ret = read(f, buf+buffill, BUF_LEN-buffill);
if(ret < 0) {
printf("Device read jumping");
return ret;
}
//printf("Read %i bytes\n", ret);
buffill += ret;
fpos += ret;
if(fpos > fnextcp) {
show_progress();
fnextcp = fpos + (ftotallen/1024);
}
return ret;
} else {
return -1;
}
}
int ret;
//printf("refill_buf: fill = %i pos = %i\n", buffill, bufpos);
if(bufpos > BUF_WATERMARK) {
memcpy(buf, buf + BUF_SEGMENT, BUF_LEN-BUF_SEGMENT);
buffill -= BUF_SEGMENT;
bufpos -= BUF_SEGMENT;
}
if(buffill < BUF_LEN) {
ret = read(f, buf+buffill, BUF_LEN-buffill);
if(ret < 0) {
printf("Device read jumping");
return ret;
}
//printf("Read %i bytes\n", ret);
buffill += ret;
fpos += ret;
if(fpos > fnextcp) {
show_progress();
fnextcp = fpos + (ftotallen/1024);
}
return ret;
} else {
return -1;
}
}
Maybe this will do it.
Full source
Quote
/*
Copyright (c) 2011 Aidan Thornton. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal with the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimers.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimers in the
documentation and/or other materials provided with the distribution.
3. Neither the names of,
or promote products derived from this Software without specific prior
written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
WITH THE SOFTWARE.
*/
#define _GNU_SOURCE
#define _FILE_OFFSET_BITS 64
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
Copyright (c) 2011 Aidan Thornton. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal with the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimers.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimers in the
documentation and/or other materials provided with the distribution.
3. Neither the names of
or promote products derived from this Software without specific prior
written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
WITH THE SOFTWARE.
*/
#define _GNU_SOURCE
#define _FILE_OFFSET_BITS 64
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
Hey, everyone I'm trying to use the following tool:
https://bitcointalksearch.org/topic/bitcoin-private-keywalletdat-data-recovery-tool-25091
To recover keys off an old 2011 era hard drive. The problem is the drive has some bad sectors and I get a drive I/O error crashing the program.
Is there a simple way to modify the code to skip ahead instead of jumping to the Device read exit block?
https://bitcointalksearch.org/topic/bitcoin-private-keywalletdat-data-recovery-tool-25091
To recover keys off an old 2011 era hard drive. The problem is the drive has some bad sectors and I get a drive I/O error crashing the program.
Quote
static int refill_buf(void) {
int ret;
//printf("refill_buf: fill = %i pos = %i\n", buffill, bufpos);
if(bufpos > BUF_WATERMARK) {
memcpy(buf, buf + BUF_SEGMENT, BUF_LEN-BUF_SEGMENT);
buffill -= BUF_SEGMENT;
bufpos -= BUF_SEGMENT;
}
if(buffill < BUF_LEN) {
ret = read(f, buf+buffill, BUF_LEN-buffill);
if(ret < 0) {
perror("Device read");
exit(1);
}
//printf("Read %i bytes\n", ret);
buffill += ret;
fpos += ret;
if(fpos > fnextcp) {
show_progress();
fnextcp = fpos + (ftotallen/1024);
}
return ret;
} else {
return -1;
}
}
int ret;
//printf("refill_buf: fill = %i pos = %i\n", buffill, bufpos);
if(bufpos > BUF_WATERMARK) {
memcpy(buf, buf + BUF_SEGMENT, BUF_LEN-BUF_SEGMENT);
buffill -= BUF_SEGMENT;
bufpos -= BUF_SEGMENT;
}
if(buffill < BUF_LEN) {
ret = read(f, buf+buffill, BUF_LEN-buffill);
if(ret < 0) {
perror("Device read");
exit(1);
}
//printf("Read %i bytes\n", ret);
buffill += ret;
fpos += ret;
if(fpos > fnextcp) {
show_progress();
fnextcp = fpos + (ftotallen/1024);
}
return ret;
} else {
return -1;
}
}
Is there a simple way to modify the code to skip ahead instead of jumping to the Device read exit block?
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