Partition recognition primary and logical
From CGSecurity
After "Deeper Search" partitions are often displayed as D (deleted). You can change the status of the selected partition using the left/right arrow key. The available statuses are Primary, * bootable, Logical, Deleted.
Primary Partitions
The first primary partition of a harddrive starts at cylinder 0.
Additional primary partitions are starting at the allocated cylinder and the second value at heads is 0.
Example:
TestDisk 6.9-WIP, Data Recovery Utility, December 2007 Christophe GRENIER <grenier@cgsecurity.org> http://www.cgsecurity.org Disk /dev/sdd - 36 GB / 34 GiB - CHS 4492 255 63 Partition Start End Size in sectors * HPFS - NTFS 0 1 1 2230 254 63 35840952 [Primary 1] P HPFS - NTFS 2231 0 1 4491 254 63 36322965 [Primary 2] Structure: Ok. Use Up/Down Arrow keys to select partition. Use LEFT/RIGHT Arrow keys to CHANGE partition characteristics: *=Primary bootable P=Primary L=Logical E=Extended D=Deleted Keys A: add partition, L: load backup, T: change type, P: list files, ENTER: to continue NTFS, 18 GB / 17 GiB
Logical Partitions
The first logical partition of a harddrive starts at cylinder 1.
Additional logical partitions are starting at the allocated cylinder and the second value at heads is 1.
Example:
TestDisk 6.9-WIP, Data Recovery Utility, December 2007 Christophe GRENIER <grenier@cgsecurity.org> http://www.cgsecurity.org Disk /dev/sdd - 36 GB / 34 GiB - CHS 4492 255 63 Partition Start End Size in sectors L HPFS - NTFS 1 1 1 2230 254 63 35840952 [Logical 1] L HPFS - NTFS 2231 1 1 4491 254 63 36322965 [Logical 2] Structure: Ok. Use Up/Down Arrow keys to select partition. Use LEFT/RIGHT Arrow keys to CHANGE partition characteristics: *=Primary bootable P=Primary L=Logical E=Extended D=Deleted Keys A: add partition, L: load backup, T: change type, P: list files, ENTER: to continue NTFS, 18 GB / 17 GiB
Return to TestDisk main page