How to check which disk is mounted where? How to mount all spare disks?
Solution 1
How do I check whether my sdb and sdc drives is mounted? And if they are, where are they mounted?
To find out what drives are mounted you can check /etc/mtab, which is a list of all devices mounted on the system. It can sometimes have various tmpfs and other things you aren't looking for mounted too, so I reccomend cat /etc/mtab | grep /dev/sd to get only physical devices.
As you showed in your answer df also works, if it doesn't show up in df, it's not mounted.
How can I mount all spare unused drives into a single directory? If not a single directory into separate directories in /media/?
The file /etc/fstab contains a list of drives on the system and rules for when, how and where to mount them. when you type in mount /dev/sda1 mount checks fstab for info on how to mount the disk. mount: can't find /dev/sdc1 in /etc/fstab or /etc/mtab means that mount didn't find a line in mtab for the disk, not that it failed to find the disk itself.
You can make mount not look in fstab by specifying where to mount the drive yourself, as in mkdir /media/sdb1; mount /dev/sdb1 /media/sdb1
If you edit fstab to add entries for your spare drives, you can make your spare drives mount at boot.
You can install pysdm to make writing entries in /etc/fstab easy.
How do I check which disk is used and which disk is still a clean slate[?]
The best way would probably be to try to mount any partitions on it and look at the data. based on the screenshots from gparted /dev/sdb1 and /dev/sdc1 look to be formatted and have data on them. Gparted doesn't have anything in the "Space Used" column for unformatted drives, because you can't use space on an unformatted drive.
What is a GPT?
It's a header at the beginning of a disk that describes where the different partitions on the disk begin and end, and some metadata about them. It supersedes and maintains some compatibility with an older format for this task called MBR(Master Boot Record).
Solution 2
mount views all currently mounted disks.
You can use mount /dev/sdXY /mnt/DISK to manually mount disks wher X stands for the disk number and Y is the partition number and "DISK" is the mount point. This "DISK" directory should be different for each disk and shoul exist before mounting
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Comments
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alvas over 1 year
Doing a
df -h:alvas@mt:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 3.5T 2.7T 597G 83% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 63G 12K 63G 1% /dev tmpfs 13G 1.8M 13G 1% /run none 5.0M 0 5.0M 0% /run/lock none 63G 72K 63G 1% /run/shm none 100M 20K 100M 1% /run/user /dev/sdd5 1.8T 1005G 718G 59% /media/2tb /dev/sdd1 1.9T 1.2T 531G 70% /media/2moretb /dev/sde1 1.9T 214G 1.7T 12% /media/shinyAnd then a
sudo fdisk -l:alvas@mt:~$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 4294967295 2147483647+ ee GPT WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdc: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 1 4294967295 2147483647+ ee GPT Disk /dev/sdd: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x0003bd79 Device Boot Start End Blocks Id System /dev/sdd1 3865466880 7812939775 1973736448 83 Linux /dev/sdd2 501758 3865466879 1932482561 5 Extended /dev/sdd5 503808 3865466879 1932481536 83 Linux Partition table entries are not in disk order WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 4294967295 2147483647+ ee GPT Disk /dev/sde: 2000.4 GB, 2000365289472 bytes 255 heads, 63 sectors/track, 243197 cylinders, total 3906963456 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: 0x2ae33383 Device Boot Start End Blocks Id System /dev/sde1 2048 3906963455 1953480704 7 HPFS/NTFS/exFAT alvas@mt:~$ alvas@mt:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 3.5T 2.7T 597G 83% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 63G 12K 63G 1% /dev tmpfs 13G 1.8M 13G 1% /run none 5.0M 0 5.0M 0% /run/lock none 63G 72K 63G 1% /run/shm none 100M 20K 100M 1% /run/user /dev/sdd5 1.8T 1005G 718G 59% /media/2tb /dev/sdd1 1.9T 1.2T 531G 70% /media/2moretb /dev/sde1 1.9T 214G 1.7T 12% /media/shiny alvas@mt:~$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 4294967295 2147483647+ ee GPT WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdc: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sdc1 1 4294967295 2147483647+ ee GPT Disk /dev/sdd: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x0003bd79 Device Boot Start End Blocks Id System /dev/sdd1 3865466880 7812939775 1973736448 83 Linux /dev/sdd2 501758 3865466879 1932482561 5 Extended /dev/sdd5 503808 3865466879 1932481536 83 Linux Partition table entries are not in disk order WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 4000.2 GB, 4000225165312 bytes 255 heads, 63 sectors/track, 486333 cylinders, total 7812939776 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 4294967295 2147483647+ ee GPT Disk /dev/sde: 2000.4 GB, 2000365289472 bytes 255 heads, 63 sectors/track, 243197 cylinders, total 3906963456 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: 0x2ae33383 Device Boot Start End Blocks Id System /dev/sde1 2048 3906963455 1953480704 7 HPFS/NTFS/exFATHow do I check whether my
sdbandsdcdrives is mounted? And if they are, where are they mounted?**What is
GPT (GUID Partition Table)? **How do I check which disk is used and which disk is still a clean slate
How can I mount all spare unused drives into a single directory?
If not a single directory into separate directories in
/media/?
It's strange because
fdiskshowed 5 physical disks butmountcan only find 2:gillin@mt:~$ mount /dev/sda1 mount: can't find /dev/sda1 in /etc/fstab or /etc/mtab gillin@mt:~$ mount /dev/sdb1 mount: can't find /dev/sdb1 in /etc/fstab or /etc/mtab gillin@mt:~$ mount /dev/sdc1 mount: can't find /dev/sdc1 in /etc/fstab or /etc/mtab gillin@mt:~$ mount /dev/sdd1 mount: according to mtab, /dev/sdd1 is already mounted on /media/2moretb mount failed gillin@mt:~$ mount /dev/sde1 mount: according to mtab, /dev/sde1 is already mounted on /media/shiny mount failed
Using gparted, I've found
sdband sdc` but they're unformatted and they looked unused but is it really safe to use it? My machine had a RAID 1/0 system but i'm not sure what is the specific settings.How to make sure that it's safe to format sdb and sdc? Does the available space on the gparted ensure that?
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mgutt over 3 yearsI use Unraid and no command works for me./etc/mtabcontains only the usb flash drive./etc/fstabcontains nothing useful at all. And simply executingmountlists only mounts to/dev/mdXbut not the correlation tosdX. The same is valid forlsblk(it listssdXdevices, but not correlation, too). Not sure if this related to Unraid or the underlying Slackware.