Difficulty Mounting USB devices

Hi,

I'm new to the forum, and while I saw similar queries, I haven't found any answer. Recently, I was transferring data onto a flash drive when the transfer crashed. I took out the flash drive, but when I inserted it again, it didn't mount. I tried with other flash drives and am having the same problem. When I plug in my iPhone, it is 'noticed' and accessible through iTunes and iPhoto, but like any other device I plug into the USB drive doesn't mount and is not accessible through finder. Devices that don't prompt any specific program are recognized in the 'system information' but completely inaccessible in terms of adding/copying data.

Flash drives I attach are recognized in 'System Information' but not in 'Disk Utility' - so it's not a question of simply remounting them. I've Verified/Repaired both my hard disk and hard disk permission, but it's not helping. Does anyone have any suggestions of how to fix this?

Thanks

Try resetting the PRAM first. See this Apple KB LINK.

Have you Re-Booted the computer lately?

If not give that a try first.

Shootist said:

Have you Re-Booted the computer lately?

If not give that a try first.

Click to expand...

The machine will reboot if he resets the PRAM as was advised above.

chscag said:

The machine will reboot if he resets the PRAM as was advised above.

Click to expand...

Well yes as that is the only way to reset PRAM. Can't do that while you are booted into the OS.

My suggestion was to Reboot first to see if it cleared up their problem.

Not sure why that was hard to understand.

Apple only suggests resetting PRAM for certain problems which are listed on the page you linked to.

Whether it should be done on a regular or irregular basis I don't know. I've never had to do it.