diskutil list command, which will show all of the disk
drives attached to the system.Pams-Computer:~ pam$ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 249.7 GB disk0s2 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *8.0 GB disk1 1: DOS_FAT_32 SI_IMPRESS 8.0 GB disk1s1 Pams-Computer:~ pam$
If you want further information on a particular drive you can use
the command diskutil info diskn where n
designates the drive number, e.g., disk1.
Pams-Computer:~ pam$ diskutil info disk1 Device Identifier: disk1 Device Node: /dev/disk1 Part Of Whole: disk1 Device / Media Name: Lexar USB Flash Drive Media Volume Name: Escaped with Unicode: Mounted: No File System: None Partition Type: FDisk_partition_scheme Bootable: Not bootable Media Type: Generic Protocol: USB SMART Status: Not Supported Total Size: 8.0 GB (8017412096 Bytes) (exactly 15659008 512-Byte-Blocks) Volume Free Space: Not Applicable Read-Only Media: No Read-Only Volume: Not applicable (no filesystem) Ejectable: Yes Whole: Yes Internal: No OS 9 Drivers: No Low Level Format: Not Supported Pams-Computer:~ pam$
Some drives support Self-Monitoring, Analysis
and Reporting Technology (S.M.A.R.T), aka SMART. If a drive does
support SMART, you can use tools that can check the SMART status of a
drive to see if the drive has hardware problems or may be in danger of
an imminent drive failure. You can determine whether a drive supports
SMART by using the diskutil info command.
Pams-Computer:~ pam$ diskutil info disk0 | grep SMART SMART Status: Verified Pams-Computer:~ pam$ diskutil info disk1 | grep SMART SMART Status: Not Supported
If the drive is experiencing hardware problems, you may see a SMART status of "Failing".
$ diskutil info disk0 | grep SMART SMART Status: Failing
If you issue the diskutil command with no parameters,
you can see a list of the parameters the command accepts.
Pams-Computer:~ pam$ diskutil
Disk Utility Tool
Utility to manage local disks and volumes
Most options require root access to the device
Usage: diskutil [quiet] <verb> <options>, where <verb> is as follows:
list (List the partitions of a disk)
info[rmation] (Get information on a specific disk or partition)
listFilesystems (List file systems available for formatting)
u[n]mount (Unmount a single volume)
unmountDisk (Unmount an entire disk (all volumes))
eject (Eject a disk)
mount (Mount a single volume)
mountDisk (Mount an entire disk (all mountable volumes))
enableJournal (Enable HFS+ journaling on a mounted HFS+ volume)
disableJournal (Disable HFS+ journaling on a mounted HFS+ volume)
moveJournal (Move the HFS+ journal onto another volume)
enableOwnership (Treat as exact User/Group IDs for a mounted volume)
disableOwnership (Ignore on-disk User/Group IDs for a mounted volume)
rename[Volume] (Rename a volume)
verifyVolume (Verify the file system data structure of a volume)
repairVolume (Repair the file system data structure of a volume)
verifyPermissions (Verify the permissions of a Mac OS X volume)
repairPermissions (Repair the permissions of a Mac OS X volume)
eraseDisk (Erase an existing disk, removing all volumes)
eraseVolume (Erase an existing volume)
eraseOptical (Erase optical media (CD/RW, DVD/RW, etc.))
zeroDisk (Erase a disk, writing zeros to the media)
randomDisk (Erase a disk, writing random data to the media)
secureErase (Securely erase a disk or freespace on a volume)
resizeVolume (Resize a volume, increasing or decreasing its size)
partitionDisk ((re)Partition a disk, removing all volumes)
splitPartition (Split an existing partition into two or more)
mergePartitions (Combine two or more existing partitions into one)
appleRAID <raidverb> (Perform additional verbs related to AppleRAID)
diskutil <verb> with no options will provide help on that verb
Pams-Computer:~ pam$If you wish to see detailed information on a drive that is shown by the
diskutil list command, you can add that drive's designator
after the command, e.g., diskutil list disk1.
Pams-Computer:~ pam$ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 249.7 GB disk0s2 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *8.0 GB disk1 1: DOS_FAT_32 SI_IMPRESS 8.0 GB disk1s1 Pams-Computer:~ pam$ diskutil info disk1 Device Identifier: disk1 Device Node: /dev/disk1 Part Of Whole: disk1 Device / Media Name: Lexar USB Flash Drive Media Volume Name: Escaped with Unicode: Mounted: No File System: None Partition Type: FDisk_partition_scheme Bootable: Not bootable Media Type: Generic Protocol: USB SMART Status: Not Supported Total Size: 8.0 GB (8017412096 Bytes) (exactly 15659008 512-Byte-Blocks) Volume Free Space: Not Applicable Read-Only Media: No Read-Only Volume: Not applicable (no filesystem) Ejectable: Yes Whole: Yes Internal: No OS 9 Drivers: No Low Level Format: Not Supported Pams-Computer:~ pam$
References:
Created: Friday July 24, 2015