Member Avatar for blkcat

:cry: S.O.S CAN ANY 1 HELP ME PLEASE I HAVE A HP PAVILION XG833 WITH 98 AND ME ON IT I CANT GET IN TO WINDOWS I REFORMATED AND EVRY THING IT TELLS ME MY IOSUB.SYS. IS CORRUPTED I COULD REALLY USE SOME HELP WITH THIS ;)

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IO.SYS is the low‑level DOS/Windows 9x boot loader — if it’s corrupt the machine won’t proceed to the graphical shell. Corruption can come from failing media (bad sectors or a dying drive), interrupted writes, virus damage, or mixing the wrong OS files (Windows 98 vs 98SE vs ME or OEM-modified images). Given ’s note that a full reinstall still reports the same error, hardware and media/version mismatch are the most likely culprits.

Recommended, prioritized troubleshooting (do these in order):

  • Verify the hard drive hardware first. Create a bootable diagnostic disk or CD from the HDD manufacturer (SeaTools, WD, Maxtor, etc.) on a working PC and run the full SMART / surface tests. If the utility reports problems, immediate data rescue and drive replacement are required.

  • If the drive passes diagnostics, use the correct official Windows 98 or Windows ME installation/recovery media (matching the installed version) and run the OS repair tools rather than copying individual files piecemeal. Also run a full surface ScanDisk and the 9x registry checker from a proper Windows startup disk to repair disk and registry consistency before attempting reinstall/repair. (This expands on ’s boot‑disk idea — use the official startup disk for the installed OS.)

  • Treat missing .MPD/.VXD files reported earlier as vendor/OEM drivers or utilities rather than core boot files. Focus on restoring the core system files from the matching installation CD or OEM recovery set; replace device drivers later from the original vendor packages.

If repair attempts still fail, mount the drive on another PC or use a live/bootable environment to copy off personal data, then do a clean install with verified media. Also double‑check power/data cable seating, drive jumper settings (for older IDE machines) and BIOS detection (this builds on ’s hardware check but adds the BIOS/diagnostic step). If the situation is unclear or diagnostics indicate intermittent faults, prioritize data backup and drive replacement.

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Member Avatar for Pimp Daddy

Hmmm. Did you actually reformat the hard disk or did you just reinstall the OS from a CD?? If you did the latter then some of the file may have remained intact while your system was being returned to it's original settings. If you formatted the disk all the references to the files would have been deleted so when you installed the OS again it should have been a fresh IO.sys.

Another option is to remove all the partitons by creating a boot floppy and using fdisk. Then just create some new partitions and start from there. You could also overwrite the corrupted files by copy the ones on the boot disk across.

Hope this helps.

Member Avatar for blkcat

i have tryed all ur ideas no luck and yes i reformatted my hd and to no such luck it still says iosubsys. corrupted, i tryed to use recover cd befor format and after nothing i have a 98 boot up floopy disk that still aint help i even went as far and gone in and try to add the files 1 at a time and most of the files i need are not found and ty for ur help

Member Avatar for blkcat

all so i went back and enter every file again step by step and it said these files were not found 1.origsmartvsd.vxd 2.ncrc710.mpd 3.ncrc810.mpd 4. 5. amsint.mpd i keep coming up with mpd files not found and after i entered them all i rebooted and did step by step command and at the end it said windows graphical user interface yes or no i hit yes and my system just shuts down but if i say no i just get
C:> PLEASE WHAT SHOULD I DO

Member Avatar for Pimp Daddy

Check your power cable to see if there's a loose connection. If there is then that could have corrupted the file. If you don't have a loose connection then I suggest getting a new hard drive. They're very cheap now.

Hope this helps.

Member Avatar for thepom11

:cry: S.O.S CAN ANY 1 HELP ME PLEASE I HAVE A HP PAVILION XG833 WITH 98 AND ME ON IT I CANT GET IN TO WINDOWS I REFORMATED AND EVRY THING IT TELLS ME MY IOSUB.SYS. IS CORRUPTED I COULD REALLY USE SOME HELP WITH THIS ;)

try a boot from the floppy and on prompt A: type sys c: and/or copy *.* c: it might help.

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