Forum Thread

Drawing file is not valid

pashugoinh123 1 10 September 15, 2015 at 11:48 AM
Hello !
About a month ago the HDD of my Acer 7750G laptop decided to teach me a lesson about backing up data and not putting all the information on the same data storage device no matter how reliable the classic HDD has become.
The hdd failed and I tried to fix it with a recovery software and damaged it even further. I took it to a data recovery firm and they managed to recover some data but most of it is non usable(I am referring to .dwg files). The following message appears when I attempt to open a damaged .dwg file:

"Drawing file is not valid"

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#2
http://docs.autodesk.com/ACD/2010...r=d0e19845

Give a repair a shot. If the data within is damaged there isn't much hope. It may just be the file container.
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#3
So your wanting to repair your files? That's probably not practically possible. The file is most likely corrupt. Try the above but thats about it.

Not going to go into the lecture about backup, as it sounds like you have learned and I hope come up with a good solution now. If anything the modern hard drive has become less reliable and more prone to errors due to it's data density.
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#4
What data recovery firm did you take it to and what did they do to the drive? the best options generally require shipping the drive, which is what some local places actually do. The same file could exist in multiple places in the form of auto save files or temp files.

It's possible someone else might be able to recover more data, but it would be quite expensive.
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#5
Quote from pashugoinh123 View Post :
Hello !
About a month ago the HDD of my Acer 7750G laptop decided to teach me a lesson about backing up data and not putting all the information on the same data storage device no matter how reliable the classic HDD has become.
The hdd failed and I tried to fix it with a recovery software and damaged it even further. I took it to a data recovery firm and they managed to recover some data but most of it is non usable(I am referring to .dwg files). The following message appears when I attempt to open a damaged .dwg file:

"Drawing file is not valid"
This might help?

http://knowledge.autodesk.com/sup...ssage.html
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#6
I wouldn't sweat trying to figure out what's wrong with the file you've been working on. With the several million lines of code, you could spend years trying to figure it out. The guru's at Autodesk will sometimes run a program or two on it to try and recover it but, in my time as an application engineer for Autodesk, it's always been better to just go back to the backup file.
Read: https://onlinefilerepair.com/en/a...nline.html
about
https://www.reddit.com/r/AutoCAD/..._dwg_file/
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