USB Flash Drive Problems

Hi
I have found 2 problems when using USB flash drives. I have a 1GB USB drive that works fine on my iMac running OS X 10.4.7. However, when I delete files on the drive, my USB space capacity does not free up. I realised that what happens is the files deleted get moved into a ".trash" folder which is invisible. I try to delete this folder, but do not have access rights to do so. My only solution is to remove the USB drive and plug into a PC to delete the files. Is there any other way around this?
Second problem. I have another 4GB USB flash drive. Once plugged into my iMac, nothing is detected. In System Profiler, I can see the device listed, yet it cannot detect the device as a USB mass storage device thus I can't open the drive in Finder to perform any file transfers. I'm sure i have the latest software drivers updated. Again, when this device is plugged into a PC, it works perfectly fine. What can I do?
Thanks
G.

Sorry, I meant if it was seen under system profiler that you could mount it under disk utility.
Open disk utility up and if the drive is listed on the left source list, highlight it and click "mount" near the top of the disk utility window.
You should not have to do this and I do not know why the drive is not mounting by itself, but this is a possible workaround.

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Last edited by adcdam (2013-04-08 01:01:22)

I installed it and got this error : now my Macbook wont even see the flash drive...

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Quote from: RemusM on 12-June-14, 17:51:30
The P965 Neo motherboard is 8 years old, so don't expect miracles. .... You need to format the USB stick in the proper way. You may use this utility to do it: hxxp://www.prime-expert.com/flashboot/ Also, it's a good idea to use the first (USB0) connector (controlled by Intel ICH8) for the USB flash drive. Good luck.
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Sounds like it's one of the following. Only the last one claims any kind of Mac OS compatibility, although I'd think it would use a standard protocol that would be accessed by generic drivers that should be in the OS. It's probably something other than the drivers if you can see it in Disk Utility but can't seem to format it.
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