need help with chdman please

ElfShotTheFood

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Is it possible to extract a chd file to a usb thumbdrive or sd card or does it have to be to a real hard drive?

chdman keeps giving me an error writing hunk0 , write error when I try to extract to a thumbdrive or sdcard. doing this on a netbook so plugging in a real hard drive would be difficult.

I just want to get the files from the megatxlg.chd file so I can copy them to my corrupt hard drive.

I am using the latest version of chdman.
chdman -extract megatxlg.chd \\.\PHYSICALDRIVE2 is the command I am trying as suggested by the killer instinct page.

any suggestions? ready to rip my hair out with this one, because I have not had much time to work on it, and when I do get time, I get nowhere.
 
Have you confirmed what physical drive the SD card is reported as in disk management? It all depends on the number of disks you have. It may not be drive 2.
 
I've never extracted a CHD image to a USB drive. I've always used IDE to CF adapter. You've tried more than one just to make sure it's not the media?
 
I was having issues writing my chd to a hard drive and it turns out that even though my chd was only 1.2 gb , the drive it was imaged from was a 20gb. In order to get the image written successfully i needed to use a 20gb or larger drive. The data may have taken up 1.2 gb but chdman needs to write the other 18.8gb of free space as well.
I am playing with a program called R-drive to try and eliminate the free space so i can dump it on a 2 gb compact flash.
Hope this helps you some.
Don
 
Try another USB port.... and disable UAC in vista or windows 7. Your security settings will not allow you to dump something on a disk. I had the same thing yesterday.
 
I've extracted images to CF cards via USB before. SD Cards as well. CHdman gets picky and the flash card had to be empty with no partitions on it, I think.
 
well here is an update. I have tried real hard drives ranging from 2 gig to 60 gigs with partitions and without and anything else I could think of, and it always comes up with the same error. "error writing hunk 0 to output file: write error"

this sucks
 
well here is an update. I have tried real hard drives ranging from 2 gig to 60 gigs with partitions and without and anything else I could think of, and it always comes up with the same error. "error writing hunk 0 to output file: write error"

this sucks

have you disabled UAC in vista?
 
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