Sorry for your loss. I have been there many times early on in my cad life.
I have found out that to re-do it seems to be 1/2 the original time. Set
your save periods in your cad set up. That should work for you. In fact,
maybe your drawing is in the saved folder now.
Indeed maybe your file was automaticly saved by Autocad , i think the
default automaic file safety precaution save is 10 minutes when installing.
You will find the settings in the option under tools,
First tab will tell you where the automatic folder his.
Third tab( open and save) will allow you to change the time between each
one. After the desired time is set just apply.
FYI : if the file was indeed automaticly saved look in the folder and just
change the ac$ extension to dwg your drawing is probably one of them if the
content of the folder was not deleted.
Many years ago I was doing a scheduled utility on my cad station and Norton
found an error on my disk and ask if I wanted to fix it. I clicked yes and
Norton locked me out from the keyboard and proceeded to chew up the whole
hard disk drive, rendering it useless, including cad files and all. So don't
feel too bad for 4 hours of lost work.
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