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Damn. I toasted a 32G USB flash drive.
#1
Well, lightly toasted anyway.

But permanently toasted.

I always try to eject flash drives when I'm done because I've lost a couple in the past. Recently I failed to, and there was much weirdness when using it. I couldn't drag and drop more than one file at a time. Usually I Cmd-A and drag a bunch to another window. I could drag them to the desktop but not another window.

And if I tried, then when I moved the cursor up and down, all the files would be unselected and reselected as the cursor passed back and forth. Then drag them all to a window would unselect all but the one the cursor was on... And it wouldn't copy over.

Restarting the mini didn't help. I ran Disk Repair on the USB drive, didn't help. I repartitioned the drive- it was one partition, and I selected 1 partition and engaged. The result was one partition (GUID'd already) but with a dark blue area displayed at the top of Disk Utility's volume graphic. It said my newly NnP'ed volume was a 32G with 26G available.

Did the NnP thing again and I got someting like 30.19 available. I'm good for two weeks or so and I did it again. This time the dark matter stayed and I'm down to 26G available. So I've got to a) do some shopping and b) put a DO NOT PULL yellow on it.
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#2
Sometimes if you format back and forth between HFS+ and DOS a few times, it will clear up. Maybe if you have access to a PC do a full format on it.
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#3
I saw a guy do this all the time on a Widows PC and a Tektronix scope, I saw him at least 100 times in 2 days we tested together; he does that all the time, and the flash drive was still OK.
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#4
he does that all the time, and the flash drive was still OK.

Good for him.

Doesn't help me one damn bit.


Sometimes if you format back and forth between HFS+ and DOS a few times, it will clear up. Maybe if you have access to a PC do a full format on it.

Well, it did clear up the first time 'round, so I'll give it a try when I get back to work. I didn't know about going back and forth from HFS to DOS.

Thanks, Racer.
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#5
Doesn't help me one damn bit.

pun intended or not?
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#6
this usually works for me...
partition* {1 only} to MBR & format as FAT.
{ * don't use current setting}
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#7
space-time wrote:
I saw a guy do this all the time on a Widows PC and a Tektronix scope, I saw him at least 100 times in 2 days we tested together; he does that all the time, and the flash drive was still OK.

Yeah, sometimes you can get away with this if the directory is updated, but it's not a good idea.
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#8
freeradical wrote:
[quote=space-time]
I saw a guy do this all the time on a Widows PC and a Tektronix scope, I saw him at least 100 times in 2 days we tested together; he does that all the time, and the flash drive was still OK.

Yeah, sometimes you can get away with this if the directory is updated, but it's not a good idea.
I've seen lots of persons "get away with it" plugging and unplugging items such as ADB, SCSI, PS/2 ports, VGA and the like over the years. Eventually the odds gets the and something does go wrong. Though recent USB storage drivers do their best to fool-proof the connection by flushing data and metadata writes to the device on a regular basis. But all it takes is not waiting long enough for that to happen and you end up with a corrupted drive.
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#9
Whenever you get stuck with one and you haven't got a PC to fix it on, goto OfficeDepot, et. al.,
and format it via the Command Line.

There are still some that won't show up - if they are formatted with HFS+. I once knew the secret little
app that is on Winduds that will take care of whatever drive is in position "E" or "F" or whatever the case
may be, and I posted about it - but it will be difficult to find here (and it's possible it might be in the archives
at DM as well - in the last few thousand posts there.

If anyone knows the name of that app ==== PLEASE put it in this thread! It's part of the OS - for when
Format (via Command Line) does NOT see the drive attached.

Be sure to format your thumb back to whatever it originally was. I don't know what format the BIG drives
are shipping as.... can you format something that large with FAT 16?? Or even FAT 32?
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#10
I'm still wondering why at this point in OS brainpower it's still an issue. There should be some kind of parachute, per se, for removing w/o ejecting (a la the iPhone when it's hooked up in iTunes).
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