I have a SanDisk 500GB memory card in my USB slot. It is a real SanDisk card (not a fake). When I click on eject media and remove the card, the drive disappears from my drive list on file explorer and Macrium. When I plug it in, it shows up as Drive D:.  However when I try to access Drive D from both File Explorer and Macrium, I get: "Please insert a disk into USB Drive (D". I have a Disk Image on the card which I cannot access and Macrum will not create programmed updates to the card. Sometimes when I reboot the computer, the memory card (Drive D) is accessible but the accessibility of the card is unavailable when I snooze the computer.  How can I fix this problem?  

You say that you have a "memory card" but that it's in a "USB slot".  So do you have a memory card plugged into a USB memory card reader, or do you have a USB flash drive plugged into a USB port?  If the former, it sounds like it may be an issue with the actual card reader.  Do you have another card reader to test that memory card with?

+x

 

jphughan - 30 June 2022 3:20 PM

You say that you have a "memory card" but that it's in a "USB slot".  So do you have a memory card plugged into a USB memory card reader, or do you have a USB flash drive plugged into a USB port?  If the former, it sounds like it may be an issue with the actual card reader.  Do you have another card reader to test that memory card with?

It's a USB flash drive plugged into a USB port.

Ok, I've never heard of a flash drive triggering an "Insert disk into" message, since obviously you can't insert anything into a flash drive.  That message CAN come up on memory card readers that present themselves essentially as a reader device that can then have actual media inserted into it (much like an optical disc drive), which is why I thought that you might in fact be working with a memory card.  And flash drives can show a DIFFERENT message such as "Please format drive D", which can come up if you have an unformatted partition or a corrupted partition.  But that doesn't appear to be the error you have.

So I don't know exactly what would cause that particular message with that type of device, but have you tried other USB ports on this system or even USB ports on completely different systems to see if the flash drive is similarly unreliable in allowing its contents to be accessed?  Conversely, do you have other flash drives to try on that USB port?  That would help isolate variables to determine where the problem lies.

This rings a very faint bell.  I vaguely remember having either a corrupt or uninitialized USB flash memory a long time ago.  Accessing the drive letter prompted the "Please insert" message,

What does Disk management show? Do you perhaps have a drive with no partition(s)?