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LOGO.SYS is a core system file used by the Windows 9x family of operating systems to display its boot-up message. It is a system file that is used to display a boot screen as part of the startup process found in Windows 95, Windows 98 and Windows Me.
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 ...
When a user is logging on to Windows, the startup sound is played, the shell (usually EXPLORER.EXE) is loaded from the [boot] section of the SYSTEM.INI file, and startup items are loaded. In all versions of Windows 9x except ME, it is also possible to load Windows by booting to a DOS prompt and typing "win".
For NT and NT-based operating systems, it also allows the user to pass preconfigured options to the kernel. The menu options are stored in boot.ini, which itself is located in the root of the same disk as NTLDR. Though NTLDR can boot DOS and non-NT versions of Windows, boot.ini cannot configure their boot options.
SYS is an external command of Seattle Computer Products 86-DOS, [1] Microsoft MS-DOS, IBM PC DOS, Digital Research FlexOS, [2] IBM/Toshiba 4690 OS, [3] PTS-DOS, [4] Itautec/Scopus Tecnologia SISNE plus, [5] and Microsoft Windows 9x operating systems. It is used to make an already formatted medium bootable.
This is the reason why a large dummy comment is typically found in the MSDOS.SYS configuration file since Windows 95. [nb 1] [4] [5] [6] By default, the file is located in the root directory of the bootable drive/partition (normally C:\ for hard disks) and has the hidden, read-only, and system file attributes set.
It can disable or re-enable software, device drivers and Windows services that run at startup, or change boot parameters. It is bundled with all versions of Microsoft Windows operating systems since Windows 98 except Windows 2000. Windows 95 and Windows 2000 users can download the utility as well, although it was not designed for them. [1]
HIMEM.SYS was first included with Windows 2.1 (1988). In MS-DOS 5.0 (1991) and later, HIMEM.SYS can be used to load the DOS kernel code into the High Memory Area (HMA) to increase the amount of available conventional memory by specifying DOS =HIGH in CONFIG.SYS .