My flash drive (San Disk Firebird 6Sp9) is no longer accessible (since this morning). Whenever I try to access my data, I get “You need to format the disk before you can use it …”. My laptop (running windows 8.1) installed some updates when I shut down yesterday, and again when I booted up this morning, since then I have been unable to access my external drive. I get the same error on other computers, one of which is running Windows 7. I have tried a recovery program, with no positive result. What else can I try?
I see the following event for Removable Disk (E:), Properties, Events
- Header : SanDisk Firebird USB Device Properties:
- Timestamp : 7/18/2015 10:29:02 AM
- Description : Device Configured (disk.inf)
- Information : Device USBSTOR\Disk&Ven_SanDisk&Prod_Firebird&Rev_1.07\0123456789ABCDEF&0 was configured. Driver Name: disk.inf
- 2nd entry with similar description and Information “Device Started (disk)”
Device Manager-E:\
- Level: Information
- Source: UserPnP
- Task Category: (7005)
- Event 1 General Description: Driver Management concluded the process to install driver wpdfs.inf_amd64_0e729876a834cfea\wpdfs.inf for Device Instance ID SWD\WPDBUSENUM_??_USBSTOR#DISK&VEN_SANDISK&PROD_FIREBIRD&REV_1.07#0123456789ABCDEF&0#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B} with the following status: 0x0.
- Event 2 General Description : Driver Management has concluded the process to add Service WUDFWpdFs for Device Instance ID SWD\WPDBUSENUM_??_USBSTOR#DISK&VEN_SANDISK&PROD_FIREBIRD&REV_1.07#0123456789ABCDEF&0#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B} with the following status: 0.
Device Manager-SanDisk Firebird USB Device
- Level: Information
- Source : Kernel-PnP
- Task Category : 410
- Event 1 General Description: Device USBSTOR\Disk&Ven_SanDisk&Prod_Firebird&Rev_1.07\0123456789ABCDEF&0 was started.
Driver Name: disk.inf
Class Guid: {4d36e967-e325-11ce-bfc1-08002be10318}
Service: disk
Lower Filters:
Upper Filters:
- Event 2 General Description: Device USBSTOR\Disk&Ven_SanDisk&Prod_Firebird&Rev_1.07\0123456789ABCDEF&0 was configured.
Driver Name: disk.inf
Class Guid: {4d36e967-e325-11ce-bfc1-08002be10318}
Driver Date: 06/21/2006
Driver Version: 6.3.9600.16384
Driver Provider: Microsoft
Driver Section: disk_install.NT
Driver Rank: 0xFF0006
Matching Device Id: GenDisk
Outranked Drivers: disk.inf:GenDisk:00FF2002
Device Updated: false