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I am running an instance on google cloud and I have attached a spare 500gb disk through the console. On the machine I can only see

$ df -aTh
Filesystem                                             Type      Size  Used Avail Use% Mounted on
rootfs                                                 rootfs    9.8G  1.3G  8.0G  14% /
sysfs                                                  sysfs        0     0     0    - /sys
proc                                                   proc         0     0     0    - /proc
udev                                                   devtmpfs   10M     0   10M   0% /dev
devpts                                                 devpts       0     0     0    - /dev/pts
tmpfs                                                  tmpfs     372M  152K  372M   1% /run
/dev/disk/by-uuid/7ad09482-d361-4685-8581-c8a3a12e8103 ext4      9.8G  1.3G  8.0G  14% /
tmpfs                                                  tmpfs     5.0M     0  5.0M   0% /run/lock
tmpfs                                                  tmpfs     743M     0  743M   0% /run/shm

I have tried to remove and reattach the disk from the console but I see nothing coming up on the machine. Any clues?

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Given that df only shows you mounted filesystems, and you haven't mentioned anything about mounting your new block device, you probably want to cat /proc/partitions instead, to find your new disk.

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    lsblk is also quite handy. I believe it just presents the contents of /proc/partitions in a slightly nicer fashion. – EEAA Nov 13 '15 at 5:50
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    Managed to mount it running, mkdir /media/500gb; sudo /usr/share/google/safe_format_and_mount /dev/sdb /media/500gb – Bizmate Nov 13 '15 at 5:57
  • @EEAA: you kids and your new-fangled tools... – womble Nov 14 '15 at 5:02

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