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System will not BOOT UP

By nhoek ·
I have a system that worked fine on Friday (or so the user says). When starting the systtem today it shows a message "Invalid System Disk replace the disk and press anykey"

I can use F-disk and go and view the drive and its contents and jump in and out of folders.

My question is could the master boot record cause this and should I replace it?

Or any other ideas?

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System will not BOOT UP

by Mike Jones In reply to System will not BOOT UP

I will assume that your system windows 98 due to the particular wording of the error message. (Could also be 95)

You will need a Windows 98 boot disk with sys.com on it.

Once you have booted up from this boot disk, you need to run the following command

a:>sys c:

This will replace the boot files (command.com io.sys msdos.sys) and the system should then boot.

If your system is not Windows 98, please let us know what operating system is in use.

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System will not BOOT UP

by nhoek In reply to System will not BOOT UP

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System will not BOOT UP

by Cactus Pete In reply to System will not BOOT UP

Well, since you didn't mention anything along these lines... Are there any removable disks in the machine? CD, floppy, Zip, etc? Remove them all, and make sure the disk you expect to be booting is the one you're using...

Use FDISK to make surethat the "active" partition is the one with the boot records on it.

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System will not BOOT UP

by nhoek In reply to System will not BOOT UP

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System will not BOOT UP

by CG IT In reply to System will not BOOT UP

I've have recently seen a problem similar to this on a friends computer that used Kazaa for file sharing. This person downloaded a program and tried to install it, when they rebooted the next day, no bootable disk was available. What I found was that the program they tried to install didn't have an installation path and if you clicked install, it would write code into Windows boot files that rendered it a nonbootable disk [very similar to the Hamby virus but doesn't show up on a Norton Antivirus scan]. When I reformated the boot partition and reinstalled the O/S, everything was fine. As your friend if they have recently installed a fileshare program.

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System will not BOOT UP

by CG IT In reply to System will not BOOT UP

note: the program this person downloaded and tried to intall was Roxio CD Creator Platinum with XP keygen and serial # file. I sent this off to Norton to see what they think. This is just an idea of what might have happened.

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System will not BOOT UP

by nhoek In reply to System will not BOOT UP

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System will not BOOT UP

by cglrcng In reply to System will not BOOT UP

Will it boot to Windows using a boot disk? I definitely SYS C: and replace the boot files, then get to "Safe Mode" and find out what software is installed recently, then I'd update AV definition files & run the AV right away.

Would also run Norton's AV off the CD in DOS ASAP. Also using the same CD (NSW 2002 or 2003 Pro. w/ Utilities), I'd run WinDr. & DiskDr. launching from the CD. (Beware, if launching from the CD there is no UNDO ENGINE avail., If the utilities are installed on the HDD (and you can actually reach them), there is, so keep this in mind).

If those choices were not avail., after getting to Safe Mode try to get to Symantec's site for an AV online scan.

I've have had and seen others have more trouble w/ installing Roxio stuff than any other software maker as a whole, many uninstalls & re-installs for some dang reason lately. Once they are in right they usually work well though. Go Figure! Use to be if it wouldn't install properly the first time tried, it wouldn't work well later.

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System will not BOOT UP

by nhoek In reply to System will not BOOT UP

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System will not BOOT UP

by wordmaster1 In reply to System will not BOOT UP

You say you can go to fdisk, so type in fdisk /mbr and hit enter. Then type sys c: and hit enter. This will often fix a mangled master boot record and make it bootable again.

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