using SFC with a Boot CD

So Windows XP collapsed....all the system got was the black screen with all the boot options
"start windows normally" " Safe Mode" needless to say none of them worked...

HDD tested - perfect condition so this is defintely just a software problem

So I got one of those Boot CD...that install a mini-OS on your system...Its now loaded
up and I am trying to run SFC but cannot...

When I go to the run box and type  in "cmd" and then the command....it is not
recognized
jetsonxAsked:
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nttranbaoCommented:
I see. you are using windows xp/2000, and it crashed. So you used bootCD to start the mini-windows 98
In fact, this mini windows is NOT installed on your computer, it is extracted to the RAM and then loaded into memory. That's why you can NOT run the sfc, because all the mini windows 98 files system are in your memory,and will disappear after the reboot.
Since it's miniwindows 98, you can NOT type cmd to open command promt(should be "command")
I suggest you collect things that were made before the crash. since all BOOT options (start normally, Safemode, Last known good....) dont work, I suggest you backup your files (using the bootCD tools: NTFS2DOS, Volka commander..) and do a clean install. That will save you much time than do a repair.

Regards
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jetsonxAuthor Commented:
ouch...nt I wish you did'nt say the word "clean install" - to be honest I only want to do this
as a last resort... I used a Boot CD to start XP not Win98...

ok then seeing that the CD has only loaded this temp OS into the memory...I will not be
able to access SFC right ?

Are there any workarounds ?
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nttranbaoCommented:
do you have ERD ( emergency repair disk)? if yes, boot from windows xp CD and use automated recovery option to repair.
To be honest, if all the boot options (safe mode, with networking, last known good, debug, vga...) fails, and if you dont have ERD or the step above fails, it's hard to fix windows. you must remember what had been done before crash. Was there any devices installed? Any programs/hotfix/ installed or removed? Was the computer infected by viruses?What is the error messages for each boot options?
And if possible, try to unplug all the hardware devices but CPU,RAM,VGA card, and see if you can boot. always try Sademode first.



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rindiCommented:
SFC /scannow has to be run from windows 2k or xp, from a command prompt. You need to be able to start windows first to get that far. In your case you need to get your XP CD, boot with that, then Don't enter the recovery console (would be the first repair option when booting the CD), but the next repair option you accept. That will do more or less the same as SFC /scannow does, it replaces the windows files with good versions, but it doesn't change anything around your installation, so the data and apps are preserved. Once that is done, make sure to reinstall the last servicepack and after that run all the windows updates.
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jetsonxAuthor Commented:
ok guyz, first of all what is ERD - I take it you don't mean the Recovery CD that came
with the stystem ?

I will try a Repair install and see if that works...

ps: I am not sure whether XP Pro or Whether XP Home was on the system  -
how do I check this ?
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rindiCommented:
The XP repair install won't work on the wrong version...
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jetsonxAuthor Commented:
rindi, how can I tell what exact version of XP is installed on the machine ?
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rindiCommented:
I don't know where you could look that up. You might be able to find something soemwhere in the registry, but in order to get that far you'd either boot to windows or you'd need another registry viewing tool you can start from some other bootable media, like the UBCD4Win. But I don't know where that is in the registry. The repair install should, if it can't do the repair becuase it is the wrong version, tell you so when you want to initiate the repair.
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jetsonxAuthor Commented:
Problem solved - I turned off the pc while it was booting up...when I turned it back on again
Scandisk came on...it did its thing and the next time I powered up...Windows sucessfully booted.

Scandisk (purely by accident) solved the problem !

-Thanks everyone for the help - appreciated.
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rindiCommented:
No problem, as long as the solution is posted here.
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