How to know which hard disk is the new one and which one is the old one
up vote
0
down vote
favorite
I ordered 2 SSDs from my provider.
However, which drive is the main drive?
How do I know which drive is the new SSD drives?
linux centos ssd
asked Jan 4 '13 at 11:12
user4951
3,291204976
add a comment |
up vote
0
down vote
favorite
I ordered 2 SSDs from my provider.
However, which drive is the main drive?
How do I know which drive is the new SSD drives?
linux centos ssd
asked Jan 4 '13 at 11:12
user4951
3,291204976
1
The UUIDs differ. If you set a disklabel that's a way to distinguish them. The partition scheme might be different as well as the content. If this all does not help I would look at the SMART data, the new drive will show a short total operation time.
– Marco
Jan 4 '13 at 11:20
Why close it? From what I see, The OP just want to know which drive is mounted asrootdevice
– daisy
Jan 5 '13 at 1:47
It looks like you are trying to find the age of your drives, is this correct?
– ctrl-alt-delor
Nov 23 at 20:44
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I ordered 2 SSDs from my provider.
However, which drive is the main drive?
How do I know which drive is the new SSD drives?
linux centos ssd
asked Jan 4 '13 at 11:12
user4951
3,291204976
I ordered 2 SSDs from my provider.
However, which drive is the main drive?
How do I know which drive is the new SSD drives?
linux centos ssd
linux centos ssd
asked Jan 4 '13 at 11:12
user4951
3,291204976
asked Jan 4 '13 at 11:12
user4951
3,291204976
asked Jan 4 '13 at 11:12
user4951
3,291204976
asked Jan 4 '13 at 11:12
user4951
3,291204976
asked Jan 4 '13 at 11:12
user4951
3,291204976
3,291204976
1
The UUIDs differ. If you set a disklabel that's a way to distinguish them. The partition scheme might be different as well as the content. If this all does not help I would look at the SMART data, the new drive will show a short total operation time.
– Marco
Jan 4 '13 at 11:20
Why close it? From what I see, The OP just want to know which drive is mounted asrootdevice
– daisy
Jan 5 '13 at 1:47
It looks like you are trying to find the age of your drives, is this correct?
– ctrl-alt-delor
Nov 23 at 20:44
add a comment |
1
The UUIDs differ. If you set a disklabel that's a way to distinguish them. The partition scheme might be different as well as the content. If this all does not help I would look at the SMART data, the new drive will show a short total operation time.
– Marco
Jan 4 '13 at 11:20
Why close it? From what I see, The OP just want to know which drive is mounted asrootdevice
– daisy
Jan 5 '13 at 1:47
It looks like you are trying to find the age of your drives, is this correct?
– ctrl-alt-delor
Nov 23 at 20:44
1
1
The UUIDs differ. If you set a disklabel that's a way to distinguish them. The partition scheme might be different as well as the content. If this all does not help I would look at the SMART data, the new drive will show a short total operation time.
– Marco
Jan 4 '13 at 11:20
The UUIDs differ. If you set a disklabel that's a way to distinguish them. The partition scheme might be different as well as the content. If this all does not help I would look at the SMART data, the new drive will show a short total operation time.
– Marco
Jan 4 '13 at 11:20
Why close it? From what I see, The OP just want to know which drive is mounted as
root device– daisy
Jan 5 '13 at 1:47
Why close it? From what I see, The OP just want to know which drive is mounted as
root device– daisy
Jan 5 '13 at 1:47
It looks like you are trying to find the age of your drives, is this correct?
– ctrl-alt-delor
Nov 23 at 20:44
It looks like you are trying to find the age of your drives, is this correct?
– ctrl-alt-delor
Nov 23 at 20:44
add a comment |
3 Answers
3
active
oldest
votes
up vote
1
down vote
accepted
You could check it by using the command
mount
It will give you all the mounted file systems. What you are interested is where the root file system is mounted (i presume thats what you mean by main drive).
This is my sample output of the mount command (just the line which contains the main disc)
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
What it says is that the partition sda1 (just sda represents the disn, sda1 represents the partition) is mounted as root. So now we know that the main disc is sda. Now we have to check what disc is actually sda.
Using lshw
Chech that with
sudo lshw -class disk
My output is
*-disk
description: ATA Disk
product: TOSHIBA
vendor: ...
physical id: ....
bus info: ...
logical name: /dev/sda
version: ...
serial: ...
size: 465GiB (500GB)
From which we can see that sda is the 500GB Toshiba disc.
Using fdisk
sudo fdisk -l sda
Output:
Disk sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00024cba
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
/dev/sda1 on /Its the / in that expression that represents the root file system.
– TheMeaningfulEngineer
Jan 4 '13 at 11:55
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
add a comment |
up vote
0
down vote
With parted which is available at CentOS afaik you won't need to mount any device
parted
print devices
or
parted
print list
will give you further details
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
add a comment |
up vote
0
down vote
If you have ordered and received two new drives then the simple way to determine which is which is to first list the devices you have connected before you connect them. You can do this using (as root) fdisk -l or as non-root (if you can use sudo)...
sudo fdisk -l
Then connect one drive at a time and repeat this and you can work out which is which.
You can look to see what the the UUID and/or the label are by...
ls -l /dev/disk/by-*
If labels are set then they will point to the device and appropriate entries can be made in your /etc/fstab. If labels are not set and you wish to set them then you can do so using e2label.
answered Nov 23 at 20:10
slackline
2011412
add a comment |
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
You could check it by using the command
mount
It will give you all the mounted file systems. What you are interested is where the root file system is mounted (i presume thats what you mean by main drive).
This is my sample output of the mount command (just the line which contains the main disc)
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
What it says is that the partition sda1 (just sda represents the disn, sda1 represents the partition) is mounted as root. So now we know that the main disc is sda. Now we have to check what disc is actually sda.
Using lshw
Chech that with
sudo lshw -class disk
My output is
*-disk
description: ATA Disk
product: TOSHIBA
vendor: ...
physical id: ....
bus info: ...
logical name: /dev/sda
version: ...
serial: ...
size: 465GiB (500GB)
From which we can see that sda is the 500GB Toshiba disc.
Using fdisk
sudo fdisk -l sda
Output:
Disk sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00024cba
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
/dev/sda1 on /Its the / in that expression that represents the root file system.
– TheMeaningfulEngineer
Jan 4 '13 at 11:55
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
add a comment |
up vote
1
down vote
accepted
You could check it by using the command
mount
It will give you all the mounted file systems. What you are interested is where the root file system is mounted (i presume thats what you mean by main drive).
This is my sample output of the mount command (just the line which contains the main disc)
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
What it says is that the partition sda1 (just sda represents the disn, sda1 represents the partition) is mounted as root. So now we know that the main disc is sda. Now we have to check what disc is actually sda.
Using lshw
Chech that with
sudo lshw -class disk
My output is
*-disk
description: ATA Disk
product: TOSHIBA
vendor: ...
physical id: ....
bus info: ...
logical name: /dev/sda
version: ...
serial: ...
size: 465GiB (500GB)
From which we can see that sda is the 500GB Toshiba disc.
Using fdisk
sudo fdisk -l sda
Output:
Disk sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00024cba
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
/dev/sda1 on /Its the / in that expression that represents the root file system.
– TheMeaningfulEngineer
Jan 4 '13 at 11:55
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
You could check it by using the command
mount
It will give you all the mounted file systems. What you are interested is where the root file system is mounted (i presume thats what you mean by main drive).
This is my sample output of the mount command (just the line which contains the main disc)
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
What it says is that the partition sda1 (just sda represents the disn, sda1 represents the partition) is mounted as root. So now we know that the main disc is sda. Now we have to check what disc is actually sda.
Using lshw
Chech that with
sudo lshw -class disk
My output is
*-disk
description: ATA Disk
product: TOSHIBA
vendor: ...
physical id: ....
bus info: ...
logical name: /dev/sda
version: ...
serial: ...
size: 465GiB (500GB)
From which we can see that sda is the 500GB Toshiba disc.
Using fdisk
sudo fdisk -l sda
Output:
Disk sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00024cba
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
You could check it by using the command
mount
It will give you all the mounted file systems. What you are interested is where the root file system is mounted (i presume thats what you mean by main drive).
This is my sample output of the mount command (just the line which contains the main disc)
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
What it says is that the partition sda1 (just sda represents the disn, sda1 represents the partition) is mounted as root. So now we know that the main disc is sda. Now we have to check what disc is actually sda.
Using lshw
Chech that with
sudo lshw -class disk
My output is
*-disk
description: ATA Disk
product: TOSHIBA
vendor: ...
physical id: ....
bus info: ...
logical name: /dev/sda
version: ...
serial: ...
size: 465GiB (500GB)
From which we can see that sda is the 500GB Toshiba disc.
Using fdisk
sudo fdisk -l sda
Output:
Disk sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00024cba
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
edited Jan 4 '13 at 12:03
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
answered Jan 4 '13 at 11:34
TheMeaningfulEngineer
1,61363568
1,61363568
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
/dev/sda1 on /Its the / in that expression that represents the root file system.
– TheMeaningfulEngineer
Jan 4 '13 at 11:55
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
add a comment |
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
/dev/sda1 on /Its the / in that expression that represents the root file system.
– TheMeaningfulEngineer
Jan 4 '13 at 11:55
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
lshw is not a command in centos
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
how do you know sda is the root?
– user4951
Jan 4 '13 at 11:54
/dev/sda1 on / Its the / in that expression that represents the root file system.– TheMeaningfulEngineer
Jan 4 '13 at 11:55
/dev/sda1 on / Its the / in that expression that represents the root file system.– TheMeaningfulEngineer
Jan 4 '13 at 11:55
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
The disks are not mounted yet.
– user4951
Feb 21 '13 at 8:39
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
@JimThio Not sure a understand your comment. Do you have three discs, one old, and two new SSD-s? And now you want to check which of file in /dev represents which SSD without mounting them?
– TheMeaningfulEngineer
Feb 21 '13 at 16:23
add a comment |
up vote
0
down vote
With parted which is available at CentOS afaik you won't need to mount any device
parted
print devices
or
parted
print list
will give you further details
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
add a comment |
up vote
0
down vote
With parted which is available at CentOS afaik you won't need to mount any device
parted
print devices
or
parted
print list
will give you further details
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
add a comment |
up vote
0
down vote
up vote
0
down vote
With parted which is available at CentOS afaik you won't need to mount any device
parted
print devices
or
parted
print list
will give you further details
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
With parted which is available at CentOS afaik you won't need to mount any device
parted
print devices
or
parted
print list
will give you further details
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
answered Mar 24 '14 at 19:55
Jaime Agudo
26626
26626
add a comment |
add a comment |
up vote
0
down vote
If you have ordered and received two new drives then the simple way to determine which is which is to first list the devices you have connected before you connect them. You can do this using (as root) fdisk -l or as non-root (if you can use sudo)...
sudo fdisk -l
Then connect one drive at a time and repeat this and you can work out which is which.
You can look to see what the the UUID and/or the label are by...
ls -l /dev/disk/by-*
If labels are set then they will point to the device and appropriate entries can be made in your /etc/fstab. If labels are not set and you wish to set them then you can do so using e2label.
answered Nov 23 at 20:10
slackline
2011412
add a comment |
up vote
0
down vote
If you have ordered and received two new drives then the simple way to determine which is which is to first list the devices you have connected before you connect them. You can do this using (as root) fdisk -l or as non-root (if you can use sudo)...
sudo fdisk -l
Then connect one drive at a time and repeat this and you can work out which is which.
You can look to see what the the UUID and/or the label are by...
ls -l /dev/disk/by-*
If labels are set then they will point to the device and appropriate entries can be made in your /etc/fstab. If labels are not set and you wish to set them then you can do so using e2label.
answered Nov 23 at 20:10
slackline
2011412
add a comment |
up vote
0
down vote
up vote
0
down vote
If you have ordered and received two new drives then the simple way to determine which is which is to first list the devices you have connected before you connect them. You can do this using (as root) fdisk -l or as non-root (if you can use sudo)...
sudo fdisk -l
Then connect one drive at a time and repeat this and you can work out which is which.
You can look to see what the the UUID and/or the label are by...
ls -l /dev/disk/by-*
If labels are set then they will point to the device and appropriate entries can be made in your /etc/fstab. If labels are not set and you wish to set them then you can do so using e2label.
answered Nov 23 at 20:10
slackline
2011412
If you have ordered and received two new drives then the simple way to determine which is which is to first list the devices you have connected before you connect them. You can do this using (as root) fdisk -l or as non-root (if you can use sudo)...
sudo fdisk -l
Then connect one drive at a time and repeat this and you can work out which is which.
You can look to see what the the UUID and/or the label are by...
ls -l /dev/disk/by-*
If labels are set then they will point to the device and appropriate entries can be made in your /etc/fstab. If labels are not set and you wish to set them then you can do so using e2label.
answered Nov 23 at 20:10
slackline
2011412
answered Nov 23 at 20:10
slackline
2011412
answered Nov 23 at 20:10
slackline
2011412
answered Nov 23 at 20:10
slackline
2011412
2011412
add a comment |
add a comment |
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The UUIDs differ. If you set a disklabel that's a way to distinguish them. The partition scheme might be different as well as the content. If this all does not help I would look at the SMART data, the new drive will show a short total operation time.
– Marco
Jan 4 '13 at 11:20
Why close it? From what I see, The OP just want to know which drive is mounted as
rootdevice– daisy
Jan 5 '13 at 1:47
It looks like you are trying to find the age of your drives, is this correct?
– ctrl-alt-delor
Nov 23 at 20:44