Lacie external hard drive no longer readable by computer
I am using a lacie tb hard drive, and ran data rescue 3 recovery software on it. Now, when I plug it in, the hard drive is not readable by the computer at all.
Advice?
thanks
Hi BoyHowdyDoo,
This is an external drive that traceyx is talking about, so no need to boot from the OS DVD to run DiskUtility.
I'm a bit suspicious that the drive is actually physically failing, I'm afraid in this case, given the mention of bad blocks etc.
Tracey, I'm not sure from your comments whether you have actually already managed to get the things you want from the drive off it or not?
Running DiskUtility over it shouldn't hurt the drive, and may repair it sufficiently to get it "seen" again. I very much doubt if Drive Rescue has really done any serious damage to the drive if it was healthy beforehand, but the mention you made of bad blocks being reported is a worry, and the WD external drives unfortunately don't have a very good reputation for reliability.
If you were trying to recover the deleted files to a disk that was itself already damaged then unpredictable consequences could have occurred.
In this situation myself, assuming this is a Mac HFS(+) formatted external drive, If Disk Utility didn't fix it I would probably use Alsoft's "DiskWarrior" to try to repair it. It is capable of dealing with problems that are beyond the ability of DiskUtility . If that failed I would use DataRescue to try to recover the contents to another external.
Rod
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Last login: Wed Mar 11 19:23:03 on ttys000
~ belambert$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *251.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 250.1 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *249.8 GB disk1
Logical Volume on disk0s2
7A998EAE-68FB-4BAC-BF40-7A31D2806B2C
Unlocked Encrypted
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk2
1: Microsoft Reserved 134.2 MB disk2s1
~ belambert$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 883A56F4-5559-4872-A8DA-960F99655B63
=========================================================
Name: Macintosh HD
Status: Online
Size: 250140434432 B (250.1 GB)
Free Space: 8921088 B (8.9 MB)
|
+-< Physical Volume 7EDAFA20-FF9A-45FB-BA44-6526BB46C381
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 250140434432 B (250.1 GB)
|
+-> Logical Volume Family B47B0B40-CBF2-4D02-BFEF-182061AC6F8E
Encryption Status: Unlocked
Encryption Type: AES-XTS
Conversion Status: Complete
Conversion Direction: -none-
Has Encrypted Extents: Yes
Fully Secure: Yes
Passphrase Required: Yes
|
+-> Logical Volume 7A998EAE-68FB-4BAC-BF40-7A31D2806B2C
Disk: disk1
Status: Online
Size (Total): 249779191808 B (249.8 GB)
Conversion Progress: -none-
Revertible: Yes (unlock and decryption required)
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
~ belambert$ mount
/dev/disk1 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
localhost:/vB3z604U-dvSpES6320fHq on /Volumes/MobileBackups (mtmfs, nosuid, read-only, nobrowse)
~ belambert$ diskutil info disk2
Device Identifier: disk2
Device Node: /dev/disk2
Part of Whole: disk2
Device / Media Name: WD My Book 111A Media
File System: None
Content (IOContent): GUID_partition_scheme
OS Can Be Installed: No
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Total Size: 2.0 TB (2000365289472 Bytes) (exactly 3906963456 512-Byte-Units)
Volume Free Space: Not applicable (no file system)
Device Block Size: 512 Bytes
Read-Only Media: No
Read-Only Volume: Not applicable (no file system)
Ejectable: Yes
File System: None
Content (IOContent): GUID_partition_scheme
OS Can Be Installed: No
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Total Size: 2.0 TB (2000365289472 Bytes) (exactly 3906963456 512-Byte-Units)
Volume Free Space: Not applicable (no file system)
Device Block Size: 512 Bytes
Read-Only Media: No
Read-Only Volume: Not applicable (no file system)
Ejectable: Yes
belambert ttys000 Wed Mar 11 17:34 - 17:39 (00:05)
belambert ttys000 Wed Mar 11 17:33 - 17:34 (00:00)
wtmp begins Sun Mar 8 14:40
~ belambert$ ~ belambert$ diskutil list
-bash: :~: command not found
~ belambert$ /dev/disk0
-bash: /dev/disk0: Permission denied
:~ belambert$ #: TYPE NAME SIZE IDENTIFIER
~ belambert$ 0: GUID_partition_scheme *251.0 GB disk0
-bash: 0:: command not found
:~ belambert$ 1: EFI EFI 209.7 MB disk0s1
-bash: 1:: command not found
~ belambert$ 2: Apple_CoreStorage 250.1 GB disk0s2
-bash: 2:: command not found
~ belambert$ 3: Apple_Boot Recovery HD 650.0 MB disk0s3
-bash: /dev/disk1: Permission denied
~ belambert$ #: TYPE NAME SIZE IDENTIFIER
~ belambert$ 0: Apple_HFS Macintosh HD *249.8 GB disk1
-bash: 0:: command not found
~ belambert$ Logical Volume on disk0s2
-bash: Logical: command not found
~ belambert$ 7A998EAE-68FB-4BAC-BF40-7A31D2806B2C
-bash: 7A998EAE-68FB-4BAC-BF40-7A31D2806B2C: command not found
~ belambert$ Unlocked Encrypted
-bash: Unlocked: command not found
:~ belambert$ /dev/disk2
-bash: /dev/disk2: Permission denied
~ belambert$ #: TYPE NAME SIZE IDENTIFIER
:~ belambert$ 0: GUID_partition_scheme *2.0 TB disk2
-bash: 0:: command not found
~ belambert$ 1: Microsoft Reserved 134.2 MB disk2s1
-bash: 1:: command not found
~ belambert$ ~ belambert$ diskutil cs list
-bash: ~: command not found
~ belambert$ CoreStorage logical volume groups (1 found)
-bash: syntax error near unexpected token `('
~ belambert$ |
-bash: syntax error near unexpected token `|'
~ belambert$ +-- Logical Volume Group 883A56F4-5559-4872-A8DA-960F99655B63
-bash: +--: command not found
~ belambert$ =========================================================
-bash: =========================================================: command not found
~ belambert$ Name: Macintosh HD
-bash: Name:: command not found
~ belambert$
-bash: 3:: command not found
~ belambert$ /dev/disk1
Whole: Yes
Internal: No
OS 9 Drivers: No
Low Level Format: Not supported
:~ belambert$ Last login: Wed Mar 11 19:23:03 on ttys000
~ belambert$ diskutil list
Whole: Yes
Internal: No
OS 9 Drivers: No
Low Level Format: Not supported
~ belambert$ Last login: Wed Mar 11 19:23:03 on ttys000
~ belambert$ diskutil list
Volume Name: Not applicable (no file system)
Mounted: Not applicable (no file system)racergirl,
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External Hard Drive no longer showing in Devices
My external hard drive no longer shows up as a device on my MBP. It has worked fine since the day I plugged it in.
The Time Machine is using the HD, and continues to do it's backups, so power and USB connection is not an issue
The HD shows up in Disk Utility (The Time Machine portion AND the partition that I've been using for storage)
I ran a repair on the partition in Disk Utility and it checks out OK
I can access this partition from VMware Fusion, so the windows side of the MBP sees it, and it's operational
Used the HD all day yesterday without issue
I've restarted the MBP to see if it would find the HD partition after a restart, it doesn't
I've unplugged (USB) and powered-off the HD, and when I power-on, it still isn't seen.
Any ideas?
JohnIf TM is turned on and it still doesn't show up then do a SMC reset.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys. -
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