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Re: User rw Permissions on New Hard Drive




On Thu 28 Feb 2019 at 15:45:47 (-0500), Stephen P. Molnar wrote:
> I am running Stretch and after much trial and tribulation, and at
> times abject horror, I have succeeded in installing a new SSD.
> 
> My drive structure is:
> 
> comp@AbNormal:~$ lsblk
> NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
> sda      8:0    0 465.8G  0 disk
> ├─sda1   8:1    0 457.9G  0 part /
> ├─sda2   8:2    0     1K  0 part
> └─sda5   8:5    0   7.9G  0 part [SWAP]
> sdb      8:16   0   1.8T  0 disk
> ├─sdb1   8:17   0   1.8T  0 part /sdb1
> ├─sdb2   8:18   0     1K  0 part
> └─sdb5   8:21   0   7.9G  0 part
> sdc      8:32   0 465.8G  0 disk
> └─sdc1   8:33   0 465.8G  0 part /sdc1
> sr0     11:0    1  1024M  0 rom
> 
> and my fstab is:
> 
> # /etc/fstab: static file system information.
> #
> # Use 'blkid' to print the universally unique identifier for a
> # device; this may be used with UUID= as a more robust way to name devices
> # that works even if disks are added and removed. See fstab(5).
> #
> # <file system> <mount point>   <type> <options>       <dump>  <pass>
> # / was on /dev/sda1 during installation
> UUID=ce25f0e1-610d-4030-ab47-129cd47d974e /               ext4
> errors=remount-ro 0       1
> # swap was on /dev/sda5 during installation
> UUID=a8f6dc7e-13f1-4495-b68a-27886d386db0 none            swap sw
> 0       0
> /dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0 0
> 
> UUID=900b5f0b-4f3d-4a64-8c91-29aee4c6fd07 /sdb1 ext4 errors=remount-ro
> 0       1
> 
> UUID=1f363165-2c59-4236-850d-36d1e807099e /sdc1 ext4 errors=remount-ro
> 0       1

Well, you did ask for a sanity check, but those mount points are still
completely insane. And you still have 1 for the last field of your
non-root filesystems when it should be 2.

I always add an explicit rw or ro under options, along with defaults.
With systemd, I add nofail to any filesystems that aren't vital for
the system to run, which means the system will still boot fully
without them.

> Finally, my user group structure is (comp is the  user):
> 
> comp cdrom floppy sudo audio dip video plugdev users netdev lpadmin scanner
> 
> The problem is how do I set rw permissions on the new SSD?

As posted by Dekks, but make sure the filesystem is already mounted:
it's the filesystem that needs changing, not the underlying mount
point.

I think your 2TB disk hasn't been altered. You could just use its
ownership/permissions as a model if you were happy with them.

Cheers,
David.