Adobe Acrobat Pro 10.1.3

I have Acrobat 10 Standard, not Pro, but I'm guessing the menu structure is the same or very similar. When I click the Create drop-down and then <PDF from Scanner>, one of the choices is Custom Scan, as shown in this screenshot:
When I select Custom Scan, I get a dialog where I can change the paper size, as well as many other options, as shown in this screenshot:
Are you not getting this in your Custom Scan dialog?

Also, when you got the new hard drive, did you keep the same OS? In other words, you say that you're now using W7/64-bit – was the previous OS on the old hard drive also W7/64-bit? If not, what was it? Regards, Joe

Joe,

On the new hard drive - same OS, same software. Just a clean install. If I select WIA-HP Officejet Pro 8500 A910 (U under the custom scan, the paper size is "automatic." This was the setting I had selected in Acrobat before the hard drive crashed. There is no other choice.

When I change it to HP Officejet Pro 8500 A910 Twain, I now have choices which weren't there before after I did a repair on Adobe to see if it fixed it. I just selected custom when I changed it to Twain, however, I still don't get the window that used to pop up and allow me to select the sheet feeder or flatbed. That window allowed me to select only the item in the preview window if it was smaller than the standard paper sizes and then scan it to an existing or new document. That is what I am not getting. I may try to uninstall later today and reinstall it to see if it still does it. Thanks for your quick reply.

You said you did a clean install – was it from the original HP CD or a download from the HP website? I suggest the latter to make sure you have the latest-and-greatest TWAIN and WIA drivers. Here's the link for your Officejet Pro 8500A Premium (A910n):
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=4063&lc=en&cc=us&dlc=en&sw_lang=&product=4083971

When you do the uninstall and reinstall later, I recommend using this download. Regards, Joe

Joe,

When I said a clean install, everything was installed with the latest version of the software. I installed Windows 7 Pro from the CD not a backup as well as the other software. I used the latest version of software from HP for the scanner. I have decided to just use the HP Scan software rather than trying to scan from within Adobe to add on to a document. It is a little more cumbersome, but I can live with it.

Makes good sense...sometimes with the technology demons, the path of least resistance is the way to go. :)   Glad it's working for you, albeit a bit cumbersome. Regards, Joe

Didn't realize you wanted to see the HP native TWAIN/WIA dialog. I never like to see those for my scanners. I always turn them off because I prefer to have the scanning manager of whatever software I'm using feed the TWAIN/WIA parameters. It's generally a lot less work than using the native TWAIN/WIA dialogs. So, for example, in Acrobat, I set User Interface to Hide Scanner's Native Interface; in PaperPort, I uncheck Display Scanner Dialog Box; etc. Anyway, different strokes for different folks and I'm glad you found something that works for you. I'm happy to help. Regards, Joe

I guess I didn't explain it very well since I didn't know what it was called. I just was having problems with Adobe scanning legal size all the time and didn't want to crop it since that is a hassle. Thanks for your help and suggestions.

You're welcome. It's a shame how long it took. My very first post mentioned the Custom Scan dialog and had I realized you wanted to see the HP TWAIN dialog, I could have had you there in an hour instead of two weeks. :(   C'est la vie, but all's well that ends well. Regards, Joe

It is what worked and the email from Experts Exchange on this question said to do that.