03-20-2017 07:02 AM
My Sandisk Ultra Dual USB drive 3.0 is functioning normally, but am not able to format it due to its 'READ ONLY' property, as shown by computer. Can someone plz suggest me how to remove this 'READ ONLY' option, so that i can format the drive.
12-04-2017 09:58 PM - edited 12-04-2017 10:01 PM
I am having the dreaded "Read Only" problem on a variety of drives.
Apacer Format Repair Utility (Free)
Did not recognise my SanDisk SD card - it is for *USB drives* -- but has worked to allow formatting of a stuck in Read only mode drive in the past.
Did not work got to 7% and stopped, though it is the tool recommended by SanDisk
Stopped part way -- all the way? -- but in the past just runnig its check has fixed things.
There is alonger list here mentioning all the above and some I have not tried (NO affiliation)
I also have some free software called RMPrebUSB which has a write zeros to the boot area but I have not tried it.
Today toggling the write protection switch worked! This is bizzare since if it were the switch it should not have allowed me to format for x percent using the above tools. I don't push the card into a Card reader slot but keep it in its own card reader which is tightly shut with a cap and electrical tape so I see no reason why the switch should have made any difference.
I am in Japan so I can't send it to the USA. I very much doubt that there is anything wrong with the card or that the supplier would give me a new card after a couple of weeks. It cost 40$ since it is 128GB. It is the third external 128GB drive that I have bought this year and this is about the 5th time I have had a read only problem. I have been using external drives for many years but it is just in the past couple of years, and certainly since Windows 8
I can't help thinkign that the prevalence of read only problems recently may have somethign to do with the fact that Microsoft has started selling cloud storage that it pushes from teh save Document area of its office products and sells bundled with Office 365. If MS makes more rules and Windows is more strict about what causes a drive to be put into Read Only mode then more peopel will need MS's cloud services.I am not saying that they are deliberately being maliscious, but that there is no incentive for them to allow users a bit of leway if they are selling an alternative to external USB memory.