I have a USB drive, which was a bootable Windows drive, which I seldom used. Recently I tried to format it, and it went corrupted (I hope). I'd like to find out if it's broken or not.
I'd tried to format it on the company comptuer, and I believe Symantec had blocked the autorun (been a while, details are not clear).
I've been trying solutions from different posts, with no luck, so I'd like to share the results:
Volume type : Physical Device BSD device node : disk2 Connection : USB Device tree path : IODeviceTree:/PCI0@0/XHC1@14 Writable : No Is case-sensitive : No Volume capacity : 31 104 958 464 Available space (Purgeable + Free) : 0 Purgeable space : 0 Free space : 0 Used space : 31 104 958 464 Owners enabled : No Is encrypted : No Can be verified : No Can be repaired : No Bootable : No Journaled : No Disk number : 2 Media name : SanDisk Ultra Fit Media Media type : Generic Ejectable : Yes Solid state : No S.M.A.R.T. status : Not Supported
Disk Utility recognizes the disk. Though it's not mountable.
The disk you attached was not readable by this computer.
Showing all devices and formatting the disk has it mount/unmount a couple of times and the process ultimately fails. Sometimes it keeps connecting & disconnecting; prompting the aforementioned error, repeatedly.
First Aid doesn't help.
Volume is already unmounted. Performing fsck_exfat -y -x /dev/rdisk2s1 Checking volume. Checking main boot region. Main boot region is invalid. Trying alternate boot region. Checking alternate boot region. Alternate boot region is invalid. The volume could not be verified completely. File system check exit code is 1. Restoring the original state found as unmounted. File system verify or repair failed. : (-69845)
- Here's the output of diskutil
diskutil list /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *31.1 GB disk2 1: Windows_NTFS 31.1 GB disk2s1
- Trying to format it as exfat
Unmounting disk Erasing Unable to write to the last block of the device. : (-69760)
- Trying to format it as FAT
Unmounting disk Couldn’t modify partition map. : (-69874)
- Output of fdisk:
.sudo fdisk /dev/disk2 Disk: /dev/disk2 geometry: 3781/255/63 [60751872 sectors] Signature: 0xAA55 Starting Ending #: id cyl hd sec - cyl hd sec [ start - size] ------------------------------------------------------------------------ *1: 07 0 0 3 - 1023 254 63 [ 2 - 60751870] HPFS/QNX/AUX 2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused 3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused 4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused .sudo gpt recover /dev/disk2 gpt recover: /dev/disk2: error: device contains a MBR .sudo gpt -r -vv show /dev/disk2 gpt show: /dev/disk2: mediasize=31104958464; sectorsize=512; blocks=60751872 gpt show: /dev/disk2: MBR at sector 0 start size index contents 0 1 MBR 1 1 2 60751870 1 MBR part 7 .sudo dd if=/dev/zero of=/dev/disk2 count=40 dd: /dev/disk2: Device not configured 9+0 records in 8+0 records out 4096 bytes transferred in 0.146817 secs (27899 bytes/sec) mutlu@Mutlus-MacBook-Pro ~ % .sudo gpt create /dev/disk2 gpt create: /dev/disk2: error: no room for the PMBR .sudo gpt add -b 40 -i 1 -s 614400 -t C12A7328-F81F-11D2-BA4B-00A0C93EC93B /dev/disk2 gpt add: /dev/disk2: error: no primary GPT header; run create or recover .sudo gpt create /dev/disk2 gpt create: /dev/disk2: error: no room for the PMBR
I'm quite inexperienced wiht the command line so I am at lost. I have a sense that I could nuke the partition table, and rebuild it somehow, but not sure how to get there. Perhaps it's broken, who knows... Any help would be greatly appreciated.
Thanks in advance!