Hey, i'm new to this whole thing. I am even new to the mac. I have 17 inch iMac brand new ( 3 months) with all the bells and whistles. I just downloaded "IBM ViaVoice for Mac " in .dmg format and everytime I try to install it I get the messages, "A disc attempting to mount as unknow has failed verification or has failed to mount"
" Error 95 no mountable file system. "
I have tried to down load other versions of this program and they all have the same problem.
Can someone tell me how to fix or get around this problem????

Hey I came here looking for help and found none...But I didn't give up hope just looked else were.....My problem was I could not mount dmg's, cds, zip disks, ect .Any way the solution i found was this..

(5). After doing some more research on this problem, I came across this post on another forum which indicated this may be a problem with the unknown user on your OS X system. The unknown user is one of those hidden Ids, like root, that has special UNIX functions.

Eric Wing (another Helper) and I developed the following procedure for checking and recreating the unknown user if yours is missing.

Verify the existence of the unknown user:

There are two ways to check your system to determine if the unknown user is missing:

A. With NetInfo Manager

1. Open NetInfo Manager (in the Computer > Mac OS X > Applications > Utilities folder)
2. In the middle column of the resulting window, select (click once) on users.
3. The column just to the right should fill with the list of users. See if unknown appears in the list.

B. 'Get Info' method

1. Select any file, preferably one you own (otherwise you'll need to authenticate first).
2. Perform a Get Info (Command+I or Apple+I) key combination on the file.
3. Select the disclosure triangle for Ownership and Permissions panel.
4. Click the Lock icon.
5. Click the double arrowhead next to the "Owner: owner_name" field.
6. In the resulting list, unknown should appear in the list of potential owners.

To recreate the unknown user:

1. Open NetInfo Manager.

2. Click the Lock icon in the bottom left hand corner of the window to authenticate, and authenticate.

3. In the middle column, select users. The column just to the right should fill with the list of users.

4. Highlight/select nobody

5. Under the Edit menu, select Duplicate; or press the key combination Command+D (Apple+D). This will create a new user, nobody copy.

6. Select the newly created user, nobody copy.

7. In the bottom half of the split screen, you'll see Properties and Values for nobody copy. You'll need to edit some of the Values for nobody copy to make them what they should be for unknown -- this will "convert" nobody copy into unknown. The following are the default values for unknown:


Property Values
expire 0
realname Unknown User
name unknown
passwd *
uid 99
_writers_passwd unknown
change 0
shell /dev/null
home /dev/null
gid 99



8. Change the following Property values to the values shown in the table in step 7: realname, name, uid, _writers_passwd, gid. Do so by double-clicking on the Values for those propteries and edit the contents with the values for unknown in step 7.

9. In the menu bar, select Domain > Save Changes.

10. Agree to Update the copy of the database if you're sure of your editing.

11. You should now see that nobody copy is now unknown

12. Quit NetInfoManager.

You should probably Restart at this point.

How many people here run into this error -95 problem, anyway? I've gotten it in several dmg files, and this is the first time I checked the forums on it.

Annyway, about this method for fixing the problem - how certain of it are you? I ask because while I know my way around the workings of OS 9 inside & out, I've only been using OS X for 8 mos or so, and still a little leary of the unfamiliar territory.

Or, put another way, I'd rather not mess with it unless I'm sure I won't screw something up.

The instructions seem pretty straightforward, except that in my NetInfo Mgr listing, there already is a listing for Unknown, so a missing Unknown isn't the problem. Is there something else going on with this Error -95 problem?

Thanks

I don't have problems with .dmg's (thanks to Safari), but here are a couple of links you can try

http://docs.info.apple.com/article.html?artnum=107288

http://discussions.info.apple.com/we...ft.0@.5999ea8b

It seems there may be a link to Flat Panel iMacs... it's just a "theory" but, if i take a downloaded dmg file to another machine, it will open just fine. There have been other reports of Error 95, and it seems to most always been Flat Panel users... the connection might be that these units use a different SuperDrive than most macs and DiskCopy maybe altered or behaves differently on these machines.

Yep, having tha same problem osx 10.2.8 ona powerbook G4. tried the permissions thing with disk copy and utiliity as described above and still no luck. dont have this problem on all downloads but enough to be annoying, any other ideas???

cheers

Jed

I suspect the problem might have something to do with providing non-stuffed dmgs for download. I ran into a case where a file was corrupted somehow, while I was downloading a few other things. Tried again with just the one item and no problems. And this was via Safari, not Limewire.

As to the remedy listed above, I checked back and found the original posting. It is only for cases where all dmgs are getting the error, not just a few. I think that's why it didn't work for this problem.

I suspect it'd be a good idea for people who make the dmgs initially to use Stuffit on them before making them available. I'm not sure if this will work, but it couldn't hurt to try.

Maybe a forum listing files in which people got error 95. We can find out which files are flawed, if everyone has trouble with them, and maybe figure out why only some do, if that's the case. In fact, I think I'll start that forum now.