Datarescue with ddrescue location of files
I am recovering a 2TB harddisk with one NTFS partition with ddrescue. Only 300GB of the 2TB are used (mainly photos).
My problem is that I have not 2TB availbable on the rescue pc. Can I assume that the files are located at the first half of the harddisk? Or should I image the whole disk (I can split the image, using the logfile)
The recovering process is really slow. Right now ddrescue gives 62 days to go. I recoverd 250GB till now.
The precise command I used was
ddrescue -r 3 -C /dev/sda ./extschijf2 ./log.txt
ntfs ddrescue
edited Jan 3 at 9:45
roaima
43.1k553116
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
|
show 2 more comments
I am recovering a 2TB harddisk with one NTFS partition with ddrescue. Only 300GB of the 2TB are used (mainly photos).
My problem is that I have not 2TB availbable on the rescue pc. Can I assume that the files are located at the first half of the harddisk? Or should I image the whole disk (I can split the image, using the logfile)
The recovering process is really slow. Right now ddrescue gives 62 days to go. I recoverd 250GB till now.
The precise command I used was
ddrescue -r 3 -C /dev/sda ./extschijf2 ./log.txt
ntfs ddrescue
edited Jan 3 at 9:45
roaima
43.1k553116
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
If the disk is dying you're going to need to replace it. Why not replace it today? And then you have a target disk to use for recovery.
– roaima
Jan 3 at 8:28
"Can I assume that the files are located at the first half of the harddisk?" probably but not necessarily.
– roaima
Jan 3 at 8:30
What settings did you give toddrescue? Bad settings can be a major source of slowness. As can a faulty disk (unsurprisingly).
– roaima
Jan 3 at 8:32
@roaima I think we're thinking among the same lines. Want me to delete my answer until OP comes back?
– Fabby
Jan 3 at 8:36
1
@Fabby, not at all. The--sparseoption looks a useful possibility. +1
– roaima
Jan 3 at 9:44
|
show 2 more comments
I am recovering a 2TB harddisk with one NTFS partition with ddrescue. Only 300GB of the 2TB are used (mainly photos).
My problem is that I have not 2TB availbable on the rescue pc. Can I assume that the files are located at the first half of the harddisk? Or should I image the whole disk (I can split the image, using the logfile)
The recovering process is really slow. Right now ddrescue gives 62 days to go. I recoverd 250GB till now.
The precise command I used was
ddrescue -r 3 -C /dev/sda ./extschijf2 ./log.txt
ntfs ddrescue
edited Jan 3 at 9:45
roaima
43.1k553116
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
I am recovering a 2TB harddisk with one NTFS partition with ddrescue. Only 300GB of the 2TB are used (mainly photos).
My problem is that I have not 2TB availbable on the rescue pc. Can I assume that the files are located at the first half of the harddisk? Or should I image the whole disk (I can split the image, using the logfile)
The recovering process is really slow. Right now ddrescue gives 62 days to go. I recoverd 250GB till now.
The precise command I used was
ddrescue -r 3 -C /dev/sda ./extschijf2 ./log.txt
ntfs ddrescue
ntfs ddrescue
edited Jan 3 at 9:45
roaima
43.1k553116
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
edited Jan 3 at 9:45
roaima
43.1k553116
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
edited Jan 3 at 9:45
roaima
43.1k553116
edited Jan 3 at 9:45
roaima
43.1k553116
edited Jan 3 at 9:45
roaima
43.1k553116
43.1k553116
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
asked Jan 3 at 8:18
het.oostenhet.oosten
1084
1084
If the disk is dying you're going to need to replace it. Why not replace it today? And then you have a target disk to use for recovery.
– roaima
Jan 3 at 8:28
"Can I assume that the files are located at the first half of the harddisk?" probably but not necessarily.
– roaima
Jan 3 at 8:30
What settings did you give toddrescue? Bad settings can be a major source of slowness. As can a faulty disk (unsurprisingly).
– roaima
Jan 3 at 8:32
@roaima I think we're thinking among the same lines. Want me to delete my answer until OP comes back?
– Fabby
Jan 3 at 8:36
1
@Fabby, not at all. The--sparseoption looks a useful possibility. +1
– roaima
Jan 3 at 9:44
|
show 2 more comments
If the disk is dying you're going to need to replace it. Why not replace it today? And then you have a target disk to use for recovery.
– roaima
Jan 3 at 8:28
"Can I assume that the files are located at the first half of the harddisk?" probably but not necessarily.
– roaima
Jan 3 at 8:30
What settings did you give toddrescue? Bad settings can be a major source of slowness. As can a faulty disk (unsurprisingly).
– roaima
Jan 3 at 8:32
@roaima I think we're thinking among the same lines. Want me to delete my answer until OP comes back?
– Fabby
Jan 3 at 8:36
1
@Fabby, not at all. The--sparseoption looks a useful possibility. +1
– roaima
Jan 3 at 9:44
If the disk is dying you're going to need to replace it. Why not replace it today? And then you have a target disk to use for recovery.
– roaima
Jan 3 at 8:28
If the disk is dying you're going to need to replace it. Why not replace it today? And then you have a target disk to use for recovery.
– roaima
Jan 3 at 8:28
"Can I assume that the files are located at the first half of the harddisk?" probably but not necessarily.
– roaima
Jan 3 at 8:30
"Can I assume that the files are located at the first half of the harddisk?" probably but not necessarily.
– roaima
Jan 3 at 8:30
What settings did you give to
ddrescue? Bad settings can be a major source of slowness. As can a faulty disk (unsurprisingly).– roaima
Jan 3 at 8:32
What settings did you give to
ddrescue? Bad settings can be a major source of slowness. As can a faulty disk (unsurprisingly).– roaima
Jan 3 at 8:32
@roaima I think we're thinking among the same lines. Want me to delete my answer until OP comes back?
– Fabby
Jan 3 at 8:36
@roaima I think we're thinking among the same lines. Want me to delete my answer until OP comes back?
– Fabby
Jan 3 at 8:36
1
1
@Fabby, not at all. The
--sparse option looks a useful possibility. +1– roaima
Jan 3 at 9:44
@Fabby, not at all. The
--sparse option looks a useful possibility. +1– roaima
Jan 3 at 9:44
|
show 2 more comments
1 Answer
1
active
oldest
votes
- Yes, NTFS has a tendency to allocate blocks at the beginning of a disk, but this is not necessarily so for all blocks.
ddrescuehas a--sparseoption that:
--sparse
Use sparse writes for outfile. (The blocks of zeros are not actually allocated on disc). May save a lot of disc space in some cases. Not all systems support this. Only regular files can be sparse.
However, not having the entire drive but only a part will make final recovery more difficult so: why not order a 2TB drive and have it shipped to you so that you can recover close to 100% of all data? You should have enough time to to that looking at the time it'll take you to finish the job (62 days)...
answered Jan 3 at 8:34
FabbyFabby
3,74811229
1
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
- Yes, NTFS has a tendency to allocate blocks at the beginning of a disk, but this is not necessarily so for all blocks.
ddrescuehas a--sparseoption that:
--sparse
Use sparse writes for outfile. (The blocks of zeros are not actually allocated on disc). May save a lot of disc space in some cases. Not all systems support this. Only regular files can be sparse.
However, not having the entire drive but only a part will make final recovery more difficult so: why not order a 2TB drive and have it shipped to you so that you can recover close to 100% of all data? You should have enough time to to that looking at the time it'll take you to finish the job (62 days)...
answered Jan 3 at 8:34
FabbyFabby
3,74811229
1
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
add a comment |
- Yes, NTFS has a tendency to allocate blocks at the beginning of a disk, but this is not necessarily so for all blocks.
ddrescuehas a--sparseoption that:
--sparse
Use sparse writes for outfile. (The blocks of zeros are not actually allocated on disc). May save a lot of disc space in some cases. Not all systems support this. Only regular files can be sparse.
However, not having the entire drive but only a part will make final recovery more difficult so: why not order a 2TB drive and have it shipped to you so that you can recover close to 100% of all data? You should have enough time to to that looking at the time it'll take you to finish the job (62 days)...
answered Jan 3 at 8:34
FabbyFabby
3,74811229
1
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
add a comment |
- Yes, NTFS has a tendency to allocate blocks at the beginning of a disk, but this is not necessarily so for all blocks.
ddrescuehas a--sparseoption that:
--sparse
Use sparse writes for outfile. (The blocks of zeros are not actually allocated on disc). May save a lot of disc space in some cases. Not all systems support this. Only regular files can be sparse.
However, not having the entire drive but only a part will make final recovery more difficult so: why not order a 2TB drive and have it shipped to you so that you can recover close to 100% of all data? You should have enough time to to that looking at the time it'll take you to finish the job (62 days)...
answered Jan 3 at 8:34
FabbyFabby
3,74811229
- Yes, NTFS has a tendency to allocate blocks at the beginning of a disk, but this is not necessarily so for all blocks.
ddrescuehas a--sparseoption that:
--sparse
Use sparse writes for outfile. (The blocks of zeros are not actually allocated on disc). May save a lot of disc space in some cases. Not all systems support this. Only regular files can be sparse.
However, not having the entire drive but only a part will make final recovery more difficult so: why not order a 2TB drive and have it shipped to you so that you can recover close to 100% of all data? You should have enough time to to that looking at the time it'll take you to finish the job (62 days)...
answered Jan 3 at 8:34
FabbyFabby
3,74811229
edited Jan 3 at 8:40
answered Jan 3 at 8:34
FabbyFabby
3,74811229
answered Jan 3 at 8:34
FabbyFabby
3,74811229
answered Jan 3 at 8:34
FabbyFabby
3,74811229
3,74811229
1
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
add a comment |
1
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
1
1
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
Reading the answer, and the comments above, I will contact my family member to buy a new harddisk. Probably better then the sparse option. If he will not buy a new disk, the risk for lost data is on his side.
– het.oosten
Jan 3 at 9:11
add a comment |
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If the disk is dying you're going to need to replace it. Why not replace it today? And then you have a target disk to use for recovery.
– roaima
Jan 3 at 8:28
"Can I assume that the files are located at the first half of the harddisk?" probably but not necessarily.
– roaima
Jan 3 at 8:30
What settings did you give to
ddrescue? Bad settings can be a major source of slowness. As can a faulty disk (unsurprisingly).– roaima
Jan 3 at 8:32
@roaima I think we're thinking among the same lines. Want me to delete my answer until OP comes back?
– Fabby
Jan 3 at 8:36
1
@Fabby, not at all. The
--sparseoption looks a useful possibility. +1– roaima
Jan 3 at 9:44