PC Maintenance Preparing for A+ Certification

Two programs try to use the same memory space; Make a note of the file causing the error, … Files on the RAM Disk. What is an ERD? Emergency Repair Disk … What Constitutes a Bootable Disk? A disk that can bring the PC to a functional level, with the OS ready to accept user commands Startup Configuration Files for DOS CONFIG.SYS Used primarily under MS-DOS Plain text file Lists environment variables and device drivers Runs only at startup AUTOEXEC.BAT Used primarily under MS-DOS Plain text file Lists applications to run at startup Simple batch file, can be rerun at any time…..

Startup Configuration Files for DOS CONFIG.SYS Used primarily under MS-DOS Plain text file Lists environment variables and device drivers Runs only at startup AUTOEXEC.BAT Used primarily under MS-DOS Plain text file Lists applications to run at startup Simple batch file, can be rerun at any time MS-DOS Boot Sequence BIOS performs POST BIOS searches for master boot record (MBR), which defines the active partition MBR takes control and locates IO.SYS IO.SYS takes control, identifies hardware IO.SYS runs CONFIG.SYS MSDOS.SYS takes control, loads OS kernel into RAM MSDOS.SYS runs AUTOEXEC.BAT Command.com displays a command prompt.

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