16Gb Flash Drives keep saying "No Access Priviledges"

S

stilbite

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I have purchased two (from different places) 16Gb Flash drives. Ok they are "no name" but never had probs with the 4GB and 8Gb before like this.
When I get to about 4GB of copied items they stop, saying I have "no user access priveledges.
Then they won't empty.. or allow anything to trrash.
The won't eject, I have to pull them out.. they then will empty.
I can then start again.. same thing!
I have tried Disk Utility, Formatting, Partitioning, Journaled and non Journald.
Each time I get the same pattern.
I have tried copying 4gb and more at one time and 1, 2, 3GB at a time.
I have tried on two different iMacs 24in Intel and a 20in iMac G5 with the exact same results.
Obviously it is the sticks but is there a way round it?
 
When you format the flash drives, you need to change the partition scheme to something more Mac-compatible.

Open Disk Utility, then highlight the flash device (not the indented volume below the device) in the left-hand sidebar.

Then, click the "Partition" pane. Select "1 partition" from the drop-down menu, and set the format to "Mac OS Extended (Journaled)."

Then, click "Options..." below the graphical partition map, and select "GUID." Click "OK."

Then, click "Apply" in the main Disk Utility window.


It sounds like even though you've reformatted the flash drives, that you may have left the partition scheme as "Master Boot Record," which is a decidedly Windows-centric partition scheme. GUID is more Mac-centric.
 
Hi Mr ElDia...,
Firstly must I say your contribution to the Mac fraternity via this site is unprecedented and I hope is appreciated worldwide.. I for one, thank you for being there. If I ever get to Texas, (far cry from Leeds, England) I will look you up and buy you a beer!

In my haste to add all my tries and do's I omitted to add this effort, I have already tried this and bizarrely I get the EXACT same result.

Because I have two different iMacs and two different 16Gb Flash drives I can experiment to determine where the fault lies. And it is without doubt with the drives which do not seem compatibly with the copying format. Nine times out of ten once corrupt forever corrupt but these seem to allow a re-format and a new start before failing! I think I also forgot to mention I have tried Fonts, Music, .dmg files and Documents so it is not the type of files either.
 
Thanks for the kudos, and if I'm ever in England (fat chance since I don't fly anymore!), the night's pints are on me!

Just as long as you don't request Newcastle... yuck! ;) Hehe...

I'm trying to think back to my education and rack my brain about the differences between magnetic and flash media, and am wondering if there could be some hardware-level something-or-other with a flash drive that could prevent it from storing files above a certain size regardless of disk format... and I can't think of any. But then again... maybe so?

I'm at a loss here. Are they older flash drives? I know 16GB have been around for two years or more (in other words, recent enough), so, in my mind, there's no reason for them to not want to hold that data.
 
WOW.. ironic, heading to (near) Newcastle for a weekend break, Tynemouth,..
http://www.tyne-photos.co.uk/tynemouth/4.htm
The turret flat on the right.. WON'T hit the Newcastle town Center LOL

These are from China, ok, maybe not top dog but like my first post.. I have 4Gb and 8Gb (maybe 6 of each) and all ok.. so this is a dilemma. Have one more landing, imminent and will see if that is the same.. the overriding question is why they accept 2-3 Gb before failing!

Your FLASH drive theory is actually very logicall .. the others are NOT FLASH DRIVES!!!
 
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