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Once all the boot and system drivers have been loaded, the kernel starts the session manager (smss.exe), which begins the login process. After the user has successfully logged into the machine, winlogon applies User and Computer Group Policy setting and runs startup programs declared in the Windows Registry and in "Startup" folders. [5]
BIOS interrupt calls perform hardware control or I/O functions requested by a program, return system information to the program, or do both. A key element of the purpose of BIOS calls is abstraction - the BIOS calls perform generally defined functions, and the specific details of how those functions are executed on the particular hardware of the system are encapsulated in the BIOS and hidden ...
Boot is short for bootstrap [1] [2] or bootstrap load and derives from the phrase to pull oneself up by one's bootstraps. [3] [4] The usage calls attention to the requirement that, if most software is loaded onto a computer by other software already running on the computer, some mechanism must exist to load the initial software onto the ...
VMware Fusion 3 software for Mac OS X can boot Mac OS X Server virtual machines using UEFI. VMware Workstation prior to version 11 unofficially supports UEFI, but is manually enabled by editing the .vmx file. [147] VMware Workstation version 11 and above supports UEFI, independently of whether the physical host system is UEFI-based.
The boot loader is responsible for accessing the file system on the boot drive, starting the kernel, and loading boot-time device drivers into memory. Once all the boot and system drivers have been loaded, the kernel starts the Session Manager Subsystem. This process launches winlogon, which allows the user to login.
The original release of Windows 98 may fail to boot on computers with a processor faster than 2.1 GHz. Windows 98 is only designed to handle up to 512 MB of RAM without changes. [86] The maximum amount of RAM the operating system is designed to use is up to 1 GB of RAM. Systems with more than 1.5 GB of RAM may continuously reboot during startup.
In October 2018, the tool was released as open source software when the main developer René Lergner (also known as HeathCliff74) stepped down. [30] The slab bootloader used by Windows RT could be unlocked using a vulnerability, but was silently patched by Microsoft in 2016. [31] UEFI Secure Boot on x86 systems can generally be unlocked.
Boot Camp 4.0 for Mac OS X 10.6 Snow Leopard version 10.6.6 up to Mac OS X 10.8 Mountain Lion version 10.8.2 only supported Windows 7. [3] However, with the release of Boot Camp 5.0 for Mac OS X 10.8 Mountain Lion in version 10.8.3, only 64-bit versions of Windows 7 and Windows 8 are officially supported. [4] [5]