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By reigns_pyro ·
The Cmputer in our Accounting Office at the municipal hall of our town encountered BSOD error problem: UNMOUNTABLE_BOOT_VOLUME with techinical information: ****STOP: 0x000000ED (0x812EC8ED, 0xC000009C, 0x00000000, 0x00000000)

At first I thought the cause of this problem is the c.p.u. was not cleaned since the time of purchase because I didn't know the BSOD error message because it automatically restart. After I cleaned the c.p.u.when I read and saw the BSOD error message. I tried to boot in safemode but still BSOD appears.

I want to reformat the harddrive but I'm afraid of lossing all of the important files which is use in the accounting office..

Can anybody help me regarding with this problem.
Is there Anything I can do to solve the problem without lossing any important files and without replacing the operating system... thank you...

win xp service pack3 the operating system of that p.c.

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Check out this link

by Jacky Howe In reply to Unmountable_Boot_Volume

Error Message when you restart your computer or upgrade to Windows XP: "STOP 0x000000ED UNMOUNTABLE_BOOT_VOLUME"

It may be as simple as a new cable.

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Are you sure that you mean SP3? It's not available yet only a Beta

by OH Smeg Moderator In reply to Unmountable_Boot_Volume

And this shouldn't be on any production computer as it's buggy and can destroy the entire system loosing all the data.

There is however a SP3 for Office XP or 2003.

Anyway as the system is producing a BSOD it sounds as if the HDD is working correctly and the system is hitting a brick wall at some point so instead of doing a lot of Hardware tests you should be able to get by with a In Place Install of XP by following these directions. But you will need a M$ Branded Install Disc not a Makers recovery Disc as this option isn't supported by the Makers Disc's.

now the provisos if the system is XP Home no problem do as you please but if the system is running XP Pro and EFS is enabled Do Not Attempt a In Place Install as the encryption Key will be destroyed and all the Data will be rendered as unreadable.

If EFS was in use you need to boot the the system off a Live Linux and backup all the data which should have been done previously anyway, then proceed to do an inplace install of the system but only after that you verify that you can read the Backed Up Data first.


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