Partition Logic is a free hard disk partitioning and data management tool. It can create, delete, format, defragment, resize, and move partitions and modify their attributes. It can copy entire hard disks from one to another.

VERSION 0.61
26/01/2006

Overview: This is a maintenance release. Some new features include Disk Manager support for resizing NTFS filesystems and arbitrary partitions, purely unprivileged user-space processes, I/O port permissions and protection, IDE block mode I/O, Linux swap detection and clobber, improved atomic kernel locks, many C library additions, and a calendar program, in addition to assorted bug fixes.

* The Disk Manager can now resize Windows XP (NTFS) partitions, as a result of porting Linux ntfsprogs NTFS resizing code.
* The Disk Manager will now allow partition-only resizing regardless of the filesystem type (with appropriate warnings).
* All userspace programs now run in unprivileged CPU mode, regardless of actual privilege level, and I/O privilege maps have been implemented by Davide Airaghi.
* Improved IDE/ATA hard disk driver performance by implementing block-mode I/O.
* Added basic 'stub' NTFS filesystem support (detection and clobber).
* Added basic 'stub' Linux swap filesystem support (detection and clobber).
* The kernel's locking code now implements real atomic locking.
* Added Bauer Vladislav's calendar program.
* All threads now use the same page directory control data as their process parents for better synchronisation.
* Process stacks now have guard pages at the top which are privileged, so that user process stack overflows cause protection faults.
* The C library now has a proper suite of malloc() functionality -- taken from the kernel's implementation -- which is now used by the kernel instead so it can be used for user space without code duplication.
* Added a kernelMemoryBlockInfo() function to return information about an allocated memory block. Useful for the realloc() libc function.
* Added a kernel disk function for rescanning the partitions of a single disk.
* Added a lock to the 'progress' data structure.
* Implemented 'confirmation' capability in the progress structure and the libvsh and libwindow progress bar/dialog functions.
* Add a kernel filesystem function for getting statistics about a filesystem (whether it's mounted or not, or indeed, properly supported or not).
* Added a kernel filesystem function for getting resizing constraints.
* Added a kernel filestystem function for requesting specific detection of filesystem type (useful for removable media and such).
* The text-mode installer now offers to let you partition first.
* The text mode Disk Manager now show the operations/commands in two columns.
* Added a window library 'radio dialog' for presenting choices in a radio button format.
* The Disk Manager's 'move partition' and 'copy disk' functions now uses standard progress dialogs and show time estimates.
* The kernel logging thread now has a lock on the log, so that the log doesn't get garbled by different processes logging at the same time.
* The OS loader's screen output is now saved in a file (/system/vloader.log) so that it can be examined afterwards.
* Removed the source code from the ISO distribution.
* Printf()-style C library functions now support left-justification ('-') format specifiers.
* Added C library functions lltoa(), lltob(), lltox(), and ulltoa() to support 'long' format specifiers and arguments.
* Added C library functions mbstowcs(), mbtowc(), and wctomb() for wide-character support.
* Added C library functions fflush(), ffs(), fgets(), realloc(), strdup(), strerror(), vfprintf(), vprintf(), vsnprintf(), and vsprintf().
* Added C library functions for 64-bit divisions such as __div64(), __divdi3(), __moddi3(), etc.
* Enabled the C library functions such as fgetpos(), fread(), fsetpos(), fflush(), fgets(), ftell(), fprintf(), fseek() and fwrite() (as applicable) to behave correctly when the FILE* stream is 'stdin', 'stdout', or 'stderr'.
* Added C library header files endian.h, stdint.h, and <sys/cdefs.h>.
* Fixed: After formatting FAT32, Linux and older Windows installers would show the filesystem as 100% full.
* Fixed: Errors with IDE/ATA hard disks as secondary masters.
* Fixed: Unformatting (clobbering) a partition in the disk manager didn't seem to convince the kernel to un-detect the previous filesystem until reboot.
* Fixed: The graphical 'ifconfig' program wasn't updating the device text after starting/stopping networking.
* Fixed: The wallpaper program was not properly shutting down its window thread.
* Fixed: The imgboot program failed to exit after calling the login program.
* Fixed: There was a (harmless) error message when running the 'ldd' program against an executable program because it always tried to load the file as a library.