Hiii...
I wanna copy the hard disk partition to another partition. I have tried so many methods,,,but all are slow ..and I wanna get a good speed...
First I tried by copying all files in the source to destination volume using Windows API Copyfile()...But this one is same as the speed of copy int he windows explorer..
Then I tried to copy at a Ring 0 level(Kernel mode )... .But this one also a slow one....
After that I did a row copy partition ( blindly reading a big chunk )...with out any checking ..whether the space used or free...this one gives speed....
But here I copy the unused space also....
For example ..If a partition contains only one text file ... to copy that partition ...copy blindly all the space( used + frees) is bad manner....
Then I decide to copy the used space only... In NTFs Master File Table ..One record contains the used space details (Volume bitmap)....
I read this bitmap using (FSCTL_GET_VOLUME_BITMAP)...It gives the address of used or free clusters.....
Presently I work using this method...... Here the block size is only the cluster size( 2kb / 4 kb)...so
the process is so slow....and I am coping single cluster by cluster....
I wanna make it fast....... with this method or any other method....
Any idea to .......
Link to any white papers...
Any new copy algorithms.....
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with regards
Krish
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