12-18-2011 06:37 AM
I have a 16GB cruzer, (SDCZ36-016G) that's about 4 months old, it just became read-only.
It has only one partition, with contains about 3GB of my files i put on there before it was read-only. There's no way of putting it back in read-write with windows or with a mac, and if i try formatting it, it says the device is readonly too.
I can't install the software that's on there, since this software also seems to need write access to the drive.
12-19-2011 12:44 AM
I just brought a 2GB cruzer for the sole purpose of transfering photos for a digital photo frame. The person who sold it to me also sold me the digital photo frame, is there any way to make this work?? My information also comes up as read only and does not work in the digial photo frame!
12-21-2011 08:30 AM
I have had my Sandisk 16GB for some time myself and for some reason starting yesterday it also now will let me open the files, but I can not save anything to it as it says it is now read only. I got to the file properties and they for the files on the drive and they show up as archived. I change that and make sure the read only box is not checked and hit apply. I exit out and come back and the properties are back to the same. I can not save new files on it either. I have Windows 7 Professional on this machine, I have not tried it on another PC, but will here shortly. I also would love to know what I can do to resolve the issues.
12-27-2011 01:05 PM
No your device comes from the factory in the Fat32 format. You can just insert it into the usb port of your computer and start copying files. I have determined with a lot of research into the same problem for me and a lot of tweaking of the registry, also using the disk management tool, the command prompt to format it that way, that it is a hopeless situation. With the SanDisk formatted in Fat32 you can only place 4 gigs of files on it. Here is the rub: Since I have the same identical problem, I have concluded that (without any advise from Sandisk) that I should have immediately upon inserting the device, began a reformat to the NTFS format. Then the device can accept more than the 4gigs maximum and you can add files at your leasure almost up to the 12 or so gigs left for writing to. I did'nt do that, so I concluded that after loading my files and removing the disk, the built in file structure of the SanDisk told it (in the Fat32 format) To lock up the system so that no more files can be added. I still have the 2.7 gigs files that I can read, but I can't write to them. I can also copy files back to My Documents, but as far as reformatting the disk, forget it. You should have reformatted the disk to NTFS immediately upon insertion. I know this is not a helpful answer, but it seems to be a reality.
12-27-2011 09:29 PM - edited 12-27-2011 09:34 PM
" I concluded that after loading my files and removing the disk, the built in file structure of the SanDisk told it (in the Fat32 format) To lock up the system so that no more files can be added. ."
An interesting theory, but far fetched IMO.
1. FAT32 is a standard MICROSOFT file system not a SanDisk file system.
2. FAT32 formatted hdds have been around for years without experiencing this problem.
3. The locking of a USB device is more than likely due to the USB device not being safely removed from a host machine, ie while it's still in use, and the FAT being corrupted as a result with no CHKDSK being run on the device to correct the problems.
12-30-2011 10:18 PM
I have ran the CHKDSK program from the command prompt. Sorry, but I believe that I am correct in my assessment. There is nothing wrong with my disk. It will not allow me to reformat it period. I've been on the merry-go-round for two weeks now, and even experts at "Staples" the store where I purchased it are baffled by this. They know all about fat32 systems, but the disk reacts for them the same way as it does for me. I'm just saying that unless you format the disk in the NTFS as soon as it is placed in the USB port, you are saying that you are satisfied with the fat32 format and accept its limitations. The limitations are that you can't reformat it to a more desireable format.
12-31-2011 06:49 AM
FWIW I have a 16GB Cruzer, with U3 on it even, and when a 6GB backup file failed to be written to it due to the FAT32 limitation I backed up the files on it, reformated it to NTFS, restored my files and have been using it fine every since.
I understand your problem but I don't understand the cause of it. It could be caused by a broken wire in the Cruzer, a static charge zap to it, a spike in the voltage to it from a USB connection, a low voltage power supply, a software security app, etc. But not your conclusion.
Have you called SanDisk support and asked them?
08-15-2012 10:05 AM
So whatis news?