PC's can be booted into many different operatings systems. The boot device is normally the hard drive, but for development, portability, and experiminatation, booting from a USB flash drive is ideal. See:
OTHER OPERATING SYSTEMS are availible for the IBM PC. These include:
Operating systems are available for other (non-IBM) PC's
"Operating System: A seething mass of linked lists." - ~David Fellows
The Disk Operating System (DOS) and the ROM BIOS serve as an insulating layer between the application program and the machine, and as a source of services to the application program. The system heirarchy may be thought of as a tree, with the lowest level being the actual hardware. The INTEL\80x86 or NEC\Vx processor sees the computer's address space as a ladder two bytes wide and one million bytes long. Parts of this ladder are in ROM, parts in RAM, and parts are not assigned. There are also 256 ports that the processor can use to control devices. The hardware is normally addressed by the ROM BIOS, which will always know where everything is in its particular system. The chips may usually also be written to directly, by telling the processor to write to a specific address or port. This sometimes does not work as the chips may not always be at the same addresses or have the same functions from machine to machine.
ive got a data recovery software and i want to take it with me in a floppy.but the software requires registration everytime and when i register it gets registered to that only machine.so i planned of creating a ramdrive and placing it there.i did it and got the drive letter of that drive and could copy that software to ram.but unfortunately that software does not work when himem.sys is loaded (loaded himem for extended memory).so i found another ramdrive creator(vdisk.sys) which did not require himem.sys for creating a drive of 2mb.please tell me a way of how to access the drive letter or any other way for my ramdrive.
I don't understand. None of the data recovery software I've seen ever require "registration". I think the most popular data recovery packages are Tom's root boot rescue floppy and the Knoppix Live CD .
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