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Recover a dead hard drive using dd
Regarding:
Recover a dead hard drive using dd
In OS X you can use the "disktool" command to find out what disks you have connected. Try
disktool -lto get started. I don't know how you would do this on other Unixes - it varies by system, as does the disk naming convention.
Recover a dead hard drive using dd
disktool lists them as
Recover a dead hard drive using dd
disk1s1 !
Recover a dead hard drive using dd
disktool lists them as
Recover a dead hard drive using dd
It depends on what OS you're trying to read the disk in, really. (See your sig for details. :))
On OS X, you use what disktool reports, but put a "/dev/" in front of it. FWIW, I found that I had to read the whole disk to get it to work, not just a single partition. YMMV. The full disk is the "diskX" name, and the individual partitions on it are the "diskXsY" names. All together, this means on OS X you're going to get a device path like: /dev/diskXThe "rXX" device name is for the author's BSD system. On a Linux system, you'll get names like "hdaX". (And Sun and HP and every other system have yet other naming conventions.)
Recover a dead hard drive using dd
I can't tell you the exact location of the unmounted drive. The easiest way is to hook it up to the enclosure and try to let OS X mount it. If it fails, You can use Diskutil to determine the /dev location of the drive.
Disk Utility
When you open Disk Utility it gives you a list of physical disks attached to the computer and their related partitions. If you click on the physical disk and hit "Info" it will show you the "Disk Identifier", such as disk0, disk1, and so on The number increments as you attach more physical disks to the system. If you click on a partition you'll see that you get a Disk Identifier of disk0s3, disk0s4, or so on up with the second number. I don't know why it starts at 3, but it does, and it goes on up from there. (I just partitioned a disk into 6 partitions to check this.)
Actually...
The partitions seem to go up in odd numbers, and the disks aren't always consecutive. I have 4 disks attached right now and they are 0, 1, 3, 4. At any rate, the way to find the information is right.
Recover a dead hard drive using dd
dgchichester asked:
How would you determine the UNIX path to the disk device? The df command seems to list this info (see the left hand column, first row of data):
But I'm not sure if this is the right device name. When I try and copy from it using dd, I get a "device busy" error.
Do I have to boot from a CDROM to make a disk image copy of my normal boot disk?
PublicMailbox at benslade dot.com ---
Recover a dead hard drive using dd
Go to the Apple, upper left hand corner and select the about this Mac from the menu. When it pops up select more info... there you will see all of the different hardware buses or interfaces, for a HD select ATA, look for the Mount point towards the bottom. FireWire is the same way, you will see all of the attached devices and they will have a mount point. That is where you will find the address which is the Mount Point. |
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