Solved Can't delete files on USB key

Pentium 4 / G4
March 13, 2006 at 11:06:16
Specs: Win98SE / OSX 10.3.9, 1.3 GHz, 512 / 1 Ghz, 768
Hello,
I have this Sandisk Cruzer Micro USB 2.0 storage key; never needed any drivers on either Win98SE or OSX, everything worked fine on both platforms...

...until I tried to REMOVE/DELETE files from the key: they don't show anymore in Explorer(Win) or Finder(Mac), but Windows and OSX both tell me the space is the same as before I deleted the files! The space occupied by the deleted files remains unavailable; the NUMBER of files on the USB-key also doesn't go down neither in Explorer nor in Finder.

The closest thread to this problem I found on this forum is this one: http://computing.net/windows2000/wwwboard/forum/16740.html
...but SanDisk only offers one single driver for the Cruzer model, and they explicitely say NOT to use it with the Micro-type, which is the one I own.

I've tried a couple of things without success, and I also realised at one point I had actually freed up space on the key, but I have no idea how I did it, very embarrassing...
I should probably backup the included software and re-format it - but I can't be doing this every time my USB-key is full, right?

I'll be very grateful for any suggestions and comments!


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✔ Best Answer
March 13, 2006 at 17:26:49
I have a Sandisk Cruzer Micro USB2.0 Model SDCZ4 (512MB) and it requires a driver on Win98SE.

I installed their Win98se OEM Driver on the Win98SE machine and it works fine.

I use WinXP on one machine and Win98SE on another.

Using it on Win98SE or WinXP it is not required to use the "Safely to Remove Hardware" icon. Just close any open Explorer windows and make sure the LED is not flashing while disconnecting it.
WinME and Win2K you must use the "Safely to Remove Hardware" icon according to Sandisk's documentation.

On both of my machines I hot plug and unplug it without any problems as noted from the Quick Start Guide that came with mine for models SDCZ2, SDCZ3, SDCZ4 and SDCZ2S.

MAC OS9.1x+, OS X v10.1.2+
Drag the removable disk to the Desktop Trash icon, Unplug the USB Flash drive.

Bryan



#1
March 13, 2006 at 11:17:13
"I should probably backup the included software and re-format it - but I can't be doing this every time my USB-key is full, right?"

I think that's what it'll take.

And no, you don't want to do this every time.

What I have found sharing USB between w2000 & OSX is that if I fdisk and format on the win box, everything is OK.

My guess is that win got tripped up by OSX.


If at first you don't succeed, you're about average.

M2


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#2
March 13, 2006 at 12:45:17
Or failing to safely remove it using the Safely Remove Hardware in the systray. It's there to tell you whether or not you can remove it. The OS particularly XP is very unforgiving.

i_XpUser


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#3
March 13, 2006 at 13:48:29
I'm not up on USB keys. But when you delete files on hard drives, the space is not released until you empty the recycle bin. I would 'assume' that it works the same on USB keys.

Sorry, I do not check for private messages


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Related Solutions

#4
March 13, 2006 at 13:59:52
Hi ham30,

I have been using USB keys on a daily basis. I can tell you there is no recycle bin on any of the flash drives I use everyday for work - 256MBm 512MB, and 1GB. One thing I learned is the importance of always using the Safely Remove Hardware icon in the systray. This will ensure that the keys remain reliable & troublefree. I uses Windows explorer to delete files. The deleted files normally are sent to the HD recycle bin unless I shift-del it to neverland.

i_XpUser


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#5
March 13, 2006 at 14:21:02
Thanks for the info, XpUser.

Sorry, I do not check for private messages


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#6
March 13, 2006 at 16:53:01
In windows XP there is a setting to no longer need the "Safely Remove Hardware" function. It instantly makes all the writes to the disk instead of cacheing them. Im at work at the moment and i cant remember but im sure a quick google will fix you up for that at least.

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#7
March 13, 2006 at 17:26:49
✔ Best Answer
I have a Sandisk Cruzer Micro USB2.0 Model SDCZ4 (512MB) and it requires a driver on Win98SE.

I installed their Win98se OEM Driver on the Win98SE machine and it works fine.

I use WinXP on one machine and Win98SE on another.

Using it on Win98SE or WinXP it is not required to use the "Safely to Remove Hardware" icon. Just close any open Explorer windows and make sure the LED is not flashing while disconnecting it.
WinME and Win2K you must use the "Safely to Remove Hardware" icon according to Sandisk's documentation.

On both of my machines I hot plug and unplug it without any problems as noted from the Quick Start Guide that came with mine for models SDCZ2, SDCZ3, SDCZ4 and SDCZ2S.

MAC OS9.1x+, OS X v10.1.2+
Drag the removable disk to the Desktop Trash icon, Unplug the USB Flash drive.

Bryan


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#8
March 13, 2006 at 17:39:10
The reason I prefer to use Safely remove hardware is that sometimes I may have forgotten that I have some program linked to files on the flash drive. If I remove the stick without first checking with the Safe Remove Hardware - anything can happen.

i_XpUser


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#9
March 14, 2006 at 03:35:34
That is good to keep in mind. Thanks

Bryan


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#10
March 14, 2006 at 19:09:29
I have got to thank everyone for contributing.
I also have news: there IS a ".trash" folder on my Sandisk Cruzer Micro (a folder that, by the way, is ONLY visible in Windows - doesn't appear in OSX, which I hadn't noticed); before reformatting the whole thing, I thought I should check it...

Again, I'm embarrassed to tell you it contained every single file I've ever deleted on that USB key. Deleting the CONTENTS of it freed up the key instantly, which confirms it works just like the trashcan in Windows... but this may be either
1)because I once may have removed it without the Safely Remove procedure (or ejecting/unmounting it in OSX), or
2)interference between the ways Windows and OSX handle file deletion.
Anyway, laying out the problem here kind of gave me the idea to try the ".trash" folder.

That's a LOT better than reformatting the whole key, as it doesn't require me to back up the data, just a quick deletion - obviously under Windows.

I use the key a lot to transfer files from the Mac to my PC and vice versa.
I will try what "Mechanix2Go" suggested in Response #1: formatting the key under Windows - but I only have 98SE and XP SP2, not 2000. I'll try both.

Thanks again everyone, this was quite instructive!


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#11
March 15, 2006 at 03:32:52
Formatting for MAC OS9+ and Win98SE = FAT or FAT16.
(The link does not go to the FAQ. You have to navigate to it and then use the Search = format to find this following lengthy answer:

Quoting
Customer needs to transfer images, music, documents, or other data files between a PC with Windows 98SE or later and a Macintosh system with Mac OS 9 or later installed. And vice versa.

Requirements:

• A Macintosh computer with Mac OS 9, version 9.2 or later installed

• A PC computer with Windows 98SE or later installed

• A SanDisk Cruzer family product which is compatible with both systems

• If you are unsure about system compatibility, please go to www.sandisk.com for more product information

Notes and Warnings:

• Not all Cruzer products are supported with Windows 98SE or later, or Mac OS 9 or later. Please check with SanDisk technical support if you have any questions regarding supported operating systems.

• Though SanDisk Cruzer products with U3™ Technology will work as a standard USB drive on the Macintosh systems, the U3™ applications will not work. Be sure to drag the U3 SYSTEM icon as well as the drive icon to the trash before removing your U3™ Technology device.

• Initializing or Formatting your Cruzer or SanDisk flash memory card will erase all files on the card. The files may not be recoverable. Please backup your files before initializing or formatting.

• Do not partition your Cruzer or SanDisk flash memory card. Repartitioning may make the flash memory device unusable on other computer systems.

Solution:

1) To copy or move files between a Macintosh and Windows PC, use the FAT file system

2) SanDisk Cruzer products are shipped ready to use on both Windows PC and Macintosh systems. In most cases, you will not need to reformat or reinitialize your SanDisk Cruzer to transfer files between a Windows PC and a Macintosh system. If you need to reformat or reinitialize a SanDisk Cruzer, please ensure the following:

• On a Windows system, format your Cruzer with the FAT or FAT16 file system.

• On a Macintosh system, format your Cruzer with the MS DOS file system.

• Once the Cruzer reformatted or reinitialized as FAT/MS DOS, it can be used to move images, music, documents and other data files between the Macintosh and Windows PC systems.

*If you need help formatting your Cruzer, please see FAQs on Cruzer formatting for your operating system, or consult the documentation for your computer for more information.

3) Once all files you need to move between systems are copied to the SanDisk Cruzer be sure to follow the steps for your computer to safely remove the device before detaching and moving your Cruzer to the other computer system. Once it is safe, detach the Cruzer from the USB port.

• On a Windows system, click on the Safely Remove Hardware icon in the task tray, and then choose the drive associated with your Cruzer. Once the Cruzer has been stopped, Windows will inform you that it is safe to remove the device.

• On a Macintosh system, drag your Cruzer to the Trash before removing it from the USB port. Once the drive icon has been removed from the Macintosh desktop, it is safe to remove the Cruzer.
End of quote

I don't know what the U3 system is that they refer to in their FAQ but it speaks of removing the files to the trash with regards to Win98SE and MACs.

(I'm guessing that has something to do with it's trash bin)

Bryan


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#12
March 15, 2006 at 04:59:39
Hi Bryan -

I never knew that there was such thing as U3 System until someone posted a question about it earlier this month. I learned something too :-)

i_XpUser


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#13
March 20, 2006 at 10:16:21
Here's a BIG THANKS to "Bryce/Bryan" for a no-brainer walkthrough on how to format my Cruzer Flash USB key!

Just like you and XpUser, I have never heard of that "U3(tm)". But them saying it doesn't work on the Mac, and me having no problems other than deletion of files (OSX recognises the Cruzer Micro faultlessly and ejects it w. no problems as well), I'll just be letting it be and not minding about it.

The thing that keeps me thinking is I seem to remember Win98SE offers formatting in FAT32, not in FAT16, as the FAQ suggests it - but I might be wrong about that (I'm not home, can't check it right away). If they tell us to use it, the option should be available.

Thanks a lot for the link again!

fedtho


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