On my Acer Travelmate 4720 laptop with Windows 7 I use memory sticks to hold my data.
One memory stick Verbatim Store N GO 8GB (FAT32) (my current 2013 data, nearly full) gave me the error msg "H: is not accessible", meaning "The volume does not contain a recognised file system", & asks to "Please format". I have not formatted nor written to the device.
My Investigation & Steps taken:
1 On Windows, Properties, it says " 0 bytes used on the Drive H".
Reboot the system, same messages "H: is not accessible", "Please format".
Changed USB ports to computer. Same messages. Still calls the memory stick :H on any port. (used safe eject process each time).
Checked File Manger, can't see it.
2 Loaded Find & Mount, this software also can not MOUNT the device & can't see the data on the external hardware.
My Outcome: Windows can't see the file system, so it's RAW. Think I need to use LINUX.
Investigate on Internet - found "How-To-Fix-External-disk-drive-suddenly-became-raw" by James Litten.
3 Used Parted Magic Linux bootable CD, with no Internet access (firefox).
Tool = TESTDISK. steps used: Default setting for 32-bit, Terminal, Testdisk, No log, select the external problem disk, Proceed, Intel, Analyse.
message "Partition sector don't have the end mark 0xAA55"
continued with: QuickSearch & waited but no data was given (can't say "y"), enter, DeeperSerach & waited but no data was given, Quit, Quit.
My Outcome: the boot sector of logical FAT32 partition is damaged.
4 Still on Parted Magic:
4.1 Mount Devices: message "error 64:unable to determine device fstype" .
4.2 On TESTDISK, the problem disk says "CHS 1022 248 62 - sector size 512".
Selected Advanced, message "no partition available".
Selected Create a Log file (testdisk.log) and redid the steps in 3, still the same - stuck on Analyse. I don't know enough on Linux to open / extract the teskdisk.log file.
Selected Geometry, Ok, said "Done with changing geometry", redid steps 3, still the same - stuck on Analyse. It didn't give me the option to set the number of heads.
4.3 Disk Health, can't find the device.
4.4 File Manager, can't find the device.
Any advise on new steps / new software to follow would be greatly appreciated.
Full Data Recovery is key for me at the moment.
I don't even know of a company in Johannesburg to help me with this.
Edited by octoberblue2, 28 October 2013 - 03:13 PM.