well, Select the Session where you lost the data (typically that is the last session or even only session (e.g. on RW media)), and you select "Find missing files and folders". This means, position the cursor on the session icon and right click. See screen shots for examples :(You can actually also start this test from the CD icon, a Track icon or a File System icon When you select "Find missing files and folders" IsoBuster will prompt you with the question to create a managed image file first.
That is unless you told IsoBuster to not prompt you anymore. To change that setting, check here.A managed image file can be a great tool because you only need to sit through a possibly painful long wait once.
Bad or damaged disc which are hard to read can take a long time to scan through. So by making a managed image file first, you actually copy all data to a special file on the hard drive and next work from there. So you only need to sit through the long wait once, after that is houndreds times faster.
If you were prompted to make the image file and you clicked yes, then the image file will load automatically after creation and the scan will start on the managed image file.

Answered by Romi , an ibibo Master, at 4:12 PM on June 30, 2008

We must also consider the kind of data that needs to be recovered. Just assume you are able to recover a hypothetical 90% of all lost files. If these files were pictures you can consider this rate a success, you got 9 out of 10 pictures back. If your files were tables of a database and 10% are missing, the entire database will probably be worthless because the data depends on each other. The more the data is depending on each other, the greater the devastation will be if even a small percentage of data is missing. We will also will look at what "90% recovered" really means. Another interesting aspect will be the "time dimension": a data recovery is usually worth less with each day, sometimes each hour, that passed by.
Physical and Logical Data Recovery

We need to distinguish between two different procedures:

1. Extracting the raw data from the affected media (physical data recovery)
2. Reconstructing the files (logical data recovery)

You can have pure logical data losses. For example, file deletion, drive formatting or virus attacks only require logical reconstruction (2). On the other hand, a mechanically failed drive that is successfully repaired (1) will not need logical reconstruction.

In reality many physical problems will need subsequent logical reconstruction because not all data has been retrieved.

Answered by Raksha , an ibibo Master, at 8:04 AM on June 30, 2008

We must also consider the kind of data that needs to be recovered. Just assume you are able to recover a hypothetical 90% of all lost files. If these files were pictures you can consider this rate a success, you got 9 out of 10 pictures back. If your files were tables of a database and 10% are missing, the entire database will probably be worthless because the data depends on each other. The more the data is depending on each other, the greater the devastation will be if even a small percentage of data is missing. We will also will look at what "90% recovered" really means. Another interesting aspect will be the "time dimension": a data recovery is usually worth less with each day, sometimes each hour, that passed by.
Physical and Logical Data Recovery

We need to distinguish between two different procedures:

1. Extracting the raw data from the affected media (physical data recovery)
2. Reconstructing the files (logical data recovery)

You can have pure logical data losses. For example, file deletion, drive formatting or virus attacks only require logical reconstruction (2). On the other hand, a mechanically failed drive that is successfully repaired (1) will not need logical reconstruction.

In reality many physical problems will need subsequent logical reconstruction because not all data has been retrieved.

A drive can be considered "dead", if it is not accessible by any software means, e.g. the BIOS, Windows' Disk Management or disk utilities such as Runtime Software's GetDataBack. A dead drive often shows additional symptoms. It does not spin or it "clicks" or it makes other kinds of strange noises.

Theses drives might have a damaged electronic board, damaged read heads, a damaged motor or damaged magnetic media. Data recovery companies with clean room facilities can often resurrect the drive by exchanging the damaged parts. They will then image the drive and perform a logical file reconstruction.

This approach is sometimes successful and then well worth the cost of several hundred or even thousands of dollars; however, sometimes it is not successful.

Physical recovery is not always possible

First, success depends on the extent of the damage. It is not possible, even in theory, to recover data from a platter that was heated up to "Curie temperature" (which is 770°C for iron). This temperature completely demagnetizes the platters. It seems doubtful whether anybody will recover data from a drive that fell on a hard floor. If the platters are unbalanced due to bending or impact they will vibrate while spinning. If the vertical amplitude of this vibration is larger than the distance the read head flies at (50µm), the drive will sustain a permanent head crash making reading the magnetic information impossible and further destructing the surface. Horizontal vibration will make it impossible for the head to stay on the track, which is thinner than 1µm.

While we know that tire shops apply weights to the wheel in order to balance the tire, a comparable technology for unbalanced platters is unknown.

The only technology possibly capable of overcoming this problem is Magnetic Force Microscope (MFM) photography, since this technique does not require the platter to spin. However, MFM requires scanning the whole surface of the platter. The MFM moves from region to region, each region yielding a picture. This alone will take several months. Then all these pictures must be stitched together. A 20GB hard drive consists of 160,000,000,000 bits, probably 300,000,000,000 bits including

Answered by Yash , an ibibo Master, at 4:22 PM on June 27, 2008

We must also consider the kind of data that needs to be recovered. Just assume you are able to recover a hypothetical 90% of all lost files. If these files were pictures you can consider this rate a success, you got 9 out of 10 pictures back. If your files were tables of a database and 10% are missing, the entire database will probably be worthless because the data depends on each other. The more the data is depending on each other, the greater the devastation will be if even a small percentage of data is missing. We will also will look at what "90% recovered" really means. Another interesting aspect will be the "time dimension": a data recovery is usually worth less with each day, sometimes each hour, that passed by.
Physical and Logical Data Recovery

We need to distinguish between two different procedures:

1. Extracting the raw data from the affected media (physical data recovery)
2. Reconstructing the files (logical data recovery)

You can have pure logical data losses. For example, file deletion, drive formatting or virus attacks only require logical reconstruction (2). On the other hand, a mechanically failed drive that is successfully repaired (1) will not need logical reconstruction.

In reality many physical problems will need subsequent logical reconstruction because not all data has been retrieved.

A drive can be considered "dead", if it is not accessible by any software means, e.g. the BIOS, Windows' Disk Management or disk utilities such as Runtime Software's GetDataBack. A dead drive often shows additional symptoms. It does not spin or it "clicks" or it makes other kinds of strange noises.

Theses drives might have a damaged electronic board, damaged read heads, a damaged motor or damaged magnetic media. Data recovery companies with clean room facilities can often resurrect the drive by exchanging the damaged parts. They will then image the drive and perform a logical file reconstruction.

This approach is sometimes successful and then well worth the cost of several hundred or even thousands of dollars; however, sometimes it is not successful.

Physical recovery is not always possible

First, success depends on the extent of the damage. It is not possible, even in theory, to recover data from a platter that was heated up to "Curie temperature" (which is 770°C for iron). This temperature completely demagnetizes the platters. It seems doubtful whether anybody will recover data from a drive that fell on a hard floor. If the platters are unbalanced due to bending or impact they will vibrate while spinning. If the vertical amplitude of this vibration is larger than the distance the read head flies at (50µm), the drive will sustain a permanent head crash making reading the magnetic information impossible and further destructing the surface. Horizontal vibration will make it impossible for the head to stay on the track, which is thinner than 1µm.

While we know that tire shops apply weights to the wheel in order to balance the tire, a comparable technology for unbalanced platters is unknown.

The only technology possibly capable of overcoming this problem is Magnetic Force Microscope (MFM) photography, since this technique does not require the platter to spin. However, MFM requires scanning the whole surface of the platter. The MFM moves from region to region, each region yielding a picture. This alone will take several months. Then all these pictures must be stitched together. A 20GB hard drive consists of 160,000,000,000 bits, probably 300,000,000,000 bits including overhead. Each bit is represented by a magnetic flux change.

Answered by Madhurima , an ibibo Master, at 8:01 PM on June 11, 2008

We must also consider the kind of data that needs to be recovered. Just assume you are able to recover a hypothetical 90% of all lost files. If these files were pictures you can consider this rate a success, you got 9 out of 10 pictures back. If your files were tables of a database and 10% are missing, the entire database will probably be worthless because the data depends on each other. The more the data is depending on each other, the greater the devastation will be if even a small percentage of data is missing. We will also will look at what "90% recovered" really means. Another interesting aspect will be the "time dimension": a data recovery is usually worth less with each day, sometimes each hour, that passed by.
Physical and Logical Data Recovery

We need to distinguish between two different procedures:

1. Extracting the raw data from the affected media (physical data recovery)
2. Reconstructing the files (logical data recovery)

You can have pure logical data losses. For example, file deletion, drive formatting or virus attacks only require logical reconstruction (2). On the other hand, a mechanically failed drive that is successfully repaired (1) will not need logical reconstruction.

In reality many physical problems will need subsequent logical reconstruction because not all data has been retrieved.

A drive can be considered "dead", if it is not accessible by any software means, e.g. the BIOS, Windows' Disk Management or disk utilities such as Runtime Software's GetDataBack. A dead drive often shows additional symptoms. It does not spin or it "clicks" or it makes other kinds of strange noises.

Theses drives might have a damaged electronic board, damaged read heads, a damaged motor or damaged magnetic media. Data recovery companies with clean room facilities can often resurrect the drive by exchanging the damaged parts. They will then image the drive and perform a logical file reconstruction.

This approach is sometimes successful and then well worth the cost of several hundred or even thousands of dollars; however, sometimes it is not successful.

Physical recovery is not always possible

First, success depends on the extent of the damage. It is not possible, even in theory, to recover data from a platter that was heated up to "Curie temperature" (which is 770°C for iron). This temperature completely demagnetizes the platters. It seems doubtful whether anybody will recover data from a drive that fell on a hard floor. If the platters are unbalanced due to bending or impact they will vibrate while spinning. If the vertical amplitude of this vibration is larger than the distance the read head flies at (50µm), the drive will sustain a permanent head crash making reading the magnetic information impossible and further destructing the surface. Horizontal vibration will make it impossible for the head to stay on the track, which is thinner than 1µm.

While we know that tire shops apply weights to the wheel in order to balance the tire, a comparable technology for unbalanced platters is unknown.

The only technology possibly capable of overcoming this problem is Magnetic Force Microscope (MFM) photography, since this technique does not require the platter to spin. However, MFM requires scanning the whole surface of the platter. The MFM moves from region to region, each region yielding a picture. This alone will take several months. Then all these pictures must be stitched together. A 20GB hard drive consists of 160,000,000,000 bits, probably 300,000,000,000 bits including overhead. Each bit is represented by a magnetic flux change.

Answered by Anju Singh , an ibibo Master, at 6:35 AM on June 06, 2008

We must also consider the kind of data that needs to be recovered. Just assume you are able to recover a hypothetical 90% of all lost files. If these files were pictures you can consider this rate a success, you got 9 out of 10 pictures back. If your files were tables of a database and 10% are missing, the entire database will probably be worthless because the data depends on each other. The more the data is depending on each other, the greater the devastation will be if even a small percentage of data is missing. We will also will look at what "90% recovered" really means. Another interesting aspect will be the "time dimension": a data recovery is usually worth less with each day, sometimes each hour, that passed by.
Physical and Logical Data Recovery

We need to distinguish between two different procedures:

1. Extracting the raw data from the affected media (physical data recovery)
2. Reconstructing the files (logical data recovery)

You can have pure logical data losses. For example, file deletion, drive formatting or virus attacks only require logical reconstruction (2). On the other hand, a mechanically failed drive that is successfully repaired (1) will not need logical reconstruction.

In reality many physical problems will need subsequent logical reconstruction because not all data has been retrieved.

A drive can be considered "dead", if it is not accessible by any software means, e.g. the BIOS, Windows' Disk Management or disk utilities such as Runtime Software's GetDataBack. A dead drive often shows additional symptoms. It does not spin or it "clicks" or it makes other kinds of strange noises.

Theses drives might have a damaged electronic board, damaged read heads, a damaged motor or damaged magnetic media. Data recovery companies with clean room facilities can often resurrect the drive by exchanging the damaged parts. They will then image the drive and perform a logical file reconstruction.

This approach is sometimes successful and then well worth the cost of several hundred or even thousands of dollars; however, sometimes it is not successful.

Physical recovery is not always possible

First, success depends on the extent of the damage. It is not possible, even in theory, to recover data from a platter that was heated up to "Curie temperature" (which is 770°C for iron). This temperature completely demagnetizes the platters. It seems doubtful whether anybody will recover data from a drive that fell on a hard floor. If the platters are unbalanced due to bending or impact they will vibrate while spinning. If the vertical amplitude of this vibration is larger than the distance the read head flies at (50µm), the drive will sustain a permanent head crash making reading the magnetic information impossible and further destructing the surface. Horizontal vibration will make it impossible for the head to stay on the track, which is thinner than 1µm.

While we know that tire shops apply weights to the wheel in order to balance the tire, a comparable technology for unbalanced platters is unknown.

The only technology possibly capable of overcoming this problem is Magnetic Force Microscope (MFM) photography, since this technique does not require the platter to spin. However, MFM requires scanning the whole surface of the platter. The MFM moves from region to region, each region yielding a picture. This alone will take several months. Then all these pictures must be stitched together. A 20GB hard drive consists of 160,000,000,000 bits, probably 300,000,000,000 bits including overhead. Each bit is represented by a magnetic flux change.

Answered by Reeta K , an ibibo Master, at 7:33 PM on June 05, 2008

Select the Session where you lost the data (typically that is the last session or even only session (e.g. on RW media)), and you select "Find missing files and folders". This means, position the cursor on the session icon and right click. See screen shots for examples :(You can actually also start this test from the CD icon, a Track icon or a File System icon When you select "Find missing files and folders" IsoBuster will prompt you with the question to create a managed image file first.
That is unless you told IsoBuster to not prompt you anymore. To change that setting, check here.A managed image file can be a great tool because you only need to sit through a possibly painful long wait once.
Bad or damaged disc which are hard to read can take a long time to scan through. So by making a managed image file first, you actually copy all data to a special file on the hard drive and next work from there. So you only need to sit through the long wait once, after that is houndreds times faster.
If you were prompted to make the image file and you clicked yes, then the image file will load automatically after creation and the scan will start on the managed image file.

Answered by Sharad Singh , an ibibo Master, at 6:59 PM on June 04, 2008

We must also consider the kind of data that needs to be recovered. Just assume you are able to recover a hypothetical 90% of all lost files. If these files were pictures you can consider this rate a success, you got 9 out of 10 pictures back. If your files were tables of a database and 10% are missing, the entire database will probably be worthless because the data depends on each other. The more the data is depending on each other, the greater the devastation will be if even a small percentage of data is missing. We will also will look at what "90% recovered" really means. Another interesting aspect will be the "time dimension": a data recovery is usually worth less with each day, sometimes each hour, that passed by.
Physical and Logical Data Recovery

We need to distinguish between two different procedures:

1. Extracting the raw data from the affected media (physical data recovery)
2. Reconstructing the files (logical data recovery)

You can have pure logical data losses. For example, file deletion, drive formatting or virus attacks only require logical reconstruction (2). On the other hand, a mechanically failed drive that is successfully repaired (1) will not need logical reconstruction.

In reality many physical problems will need subsequent logical reconstruction because not all data has been retrieved.

A drive can be considered "dead", if it is not accessible by any software means, e.g. the BIOS, Windows' Disk Management or disk utilities such as Runtime Software's GetDataBack. A dead drive often shows additional symptoms. It does not spin or it "clicks" or it makes other kinds of strange noises.

Theses drives might have a damaged electronic board, damaged read heads, a damaged motor or damaged magnetic media. Data recovery companies with clean room facilities can often resurrect the drive by exchanging the damaged parts. They will then image the drive and perform a logical file reconstruction.

This approach is sometimes successful and then well worth the cost of several hundred or even thousands of dollars; however, sometimes it is not successful.

Physical recovery is not always possible

First, success depends on the extent of the damage. It is not possible, even in theory, to recover data from a platter that was heated up to "Curie temperature" (which is 770°C for iron). This temperature completely demagnetizes the platters. It seems doubtful whether anybody will recover data from a drive that fell on a hard floor. If the platters are unbalanced due to bending or impact they will vibrate while spinning. If the vertical amplitude of this vibration is larger than the distance the read head flies at (50µm), the drive will sustain a permanent head crash making reading the magnetic information impossible and further destructing the surface. Horizontal vibration will make it impossible for the head to stay on the track, which is thinner than 1µm.

While we know that tire shops apply weights to the wheel in order to balance the tire, a comparable technology for unbalanced platters is unknown.

The only technology possibly capable of overcoming this problem is Magnetic Force Microscope (MFM) photography, since this technique does not require the platter to spin. However, MFM requires scanning the whole surface of the platter. The MFM moves from region to region, each region yielding a picture. This alone will take several months. Then all these pictures must be stitched together. A 20GB hard drive consists of 160,000,000,000 bits, probably 300,000,000,000 bits including overhead. Each bit is represented by a magnetic flux change. A picture displaying this flux change will probably use 100 bytes, thus infla

Answered by Shobhit , an ibibo Master, at 4:29 PM on June 04, 2008

dude you should save your data from DOS operatig system....you just have to insert bootable CD in your drive ....then juss copy all the data

Answered by pratik at 12:13 PM on June 04, 2008

hello navneet Select the Session where you lost the data (typically that is the last session or even only session (e.g. on RW media)), and you select "Find missing files and folders". This means, position the cursor on the session icon and right click. See screen shots for examples :
(You can actually also start this test from the CD icon, a Track icon or a File System icon
When you select "Find missing files and folders" IsoBuster will prompt you with the question to create a managed image file first.
That is unless you told IsoBuster to not prompt you anymore. To change that setting, check here.
A managed image file can be a great tool because you only need to sit through a possibly painful long wait once.
Bad or damaged disc which are hard to read can take a long time to scan through. So by making a managed image file first, you actually copy all data to a special file on the hard drive and next work from there. So you only need to sit through the long wait once, after that is houndreds times faster.
If you were prompted to make the image file and you clicked yes, then the image file will load automatically after creation and the scan will start on the managed image file.

If you are more experienced and already made a managed image file first, just load that file and work from there. E.g. start the scan "Find missing files and folders"
for more inf check source http://www.smart-projects.net/help. php?help=145

Answered by raj u , an ibibo Master, at 12:09 PM on June 04, 2008