Visopsys

The bulk of this release consists of general bugfixes and improvements to hardware detection and device drivers, with a particular focus on USB. New features include the ability to boot from a USB device (a new USB image is available for download) and the ability to power down the system.

This preview of the next release offers an updated
look and a number of new features, including JPEG
image support, image resizing, 64-bit disk
support, UDF (DVD) filesystem support, and GPT
partition table support, as well as lots of new
icons, wallpaper images, and file browsing
functionality. New administrative applications and
functionality have been added, and the ATA/IDE
driver has been enhanced, including the ability to
better support backwards-compatible SATA
controllers. FPU context saving has been improved,
and a number of tweaks and bugfixes are also
included.

This is a maintenance release comprising the final
round of tweaks and bugfixes to the 0.6x series of
Visopsys. Lots of work was done on the USB
subsystem, including support for USB
mice/keyboards and hubs. The FAT filesystem driver
was tuned. Usability fixes were made for various
user programs. Loads of OS kernel and C library
improvements and bugfixes were made.

This maintenance release focused on disk I/O performance (fixing the kernel's disk cache and adding IDE lookahead and write caching), secure deletion (shredding) of files/partitions/disks, and bugfixes, including important changes to the OS loader resulting in more reliable booting on more systems.

This maintenance release includes a number of bugfixes and the addition of new capabilities to the IDE disk driver, including PCI, DMA, and 48-bit addressing support, a significant re-engineering of the Disk Manager program to modularize it for new disk label types, plus support for moving logical partitions and creating 'preceding' logical partitions.