-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sun, Jul 02, 2017 at 06:42:55PM +0100, David wrote: > On Sat, 2017-07-01 at 17:35 +0200, to...@tuxteam.de wrote: > > On Sat, Jul 01, 2017 at 04:22:29PM +0100, David wrote: > > > Dear List, > > > > > > I am using Linux Mint Debian (Betsy) and I'm having problems writing to > > > removable hard disks. > > > > > > There are no problems reading and writing to USB sticks. > > > > > > But removable sata disks I can read, but not write to. These disks are > > > in caddies that are designed to be removed. > > > > > > I thought the problem was because one of the disks in question was not > > > formatted on the Mint machine, so I formatted a new disk, same problem. > > > > > > Can anybody offer me a solution? > > > > What file system are those disks formatted with? > > > > Things to check: > > > > - what are the permissions of the files/directories you try to > > write to? > > - is the whole disk perhaps mounted read only? > > > > You may get some hints from the error message when you try the > > write or from the log files, e.g. /var/log/messages (at mount > > time). > > > > > Would I have the same problem if I used native Debian? > > > > Difficult to say without more hints. > > > > Cheers > > -- tomás > > Sorry I should have given more details. > > The disks are formatted to EXT4 and they do appear to be read only. > > The attached details below are the results from /var/log/messages > > The first part is a disk that has files on it that I can read, but I > cannot write to it. > > The second part is a new disk that I have recently formatted and has no > data on it. Trying to mount this second disk previously I got a message > about dbus, but I didn't this time. > > What I would like to do is to create directories and copy files into > those directories to create a backup. >
Hmm. this (from the first log snippet) looks at least suspicious: > Jul 2 18:26:08 david-mint-debian kernel: [ 336.603699] EXT4-fs (sdb1): > warning: mounting fs with errors, running e2fsck is recommended I'd expect a file system with errors to be mounted read-only (although I can't see any hint towards that in the log itself: I would expect a noice to that effect). BTW, this hints against Hans's guess that only FAT or NTFS are auto-mounted. This file system is being mounted. Now the error message when trying to write to the file system becomes the more interesting. I'd suggest you try t from a terminal: You can try that with "touch". Assuming /some/directory is a directory on your file system, and there's no file in there called "foo", you might try touch /some/directory/foo This would try to create an (empty) file foo there. You might get "permission denied" or "mumble mumble read-only file system". But, first of all: if your data is valuable there, make a backup and run a file system check! Cheers - -- tomás -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAllZWIUACgkQBcgs9XrR2kZnsQCeNX+H3nlm0xwx2e3lSu6/vjjt IyUAn2s5SU+n00uMMH1XALKkwnCblWfx =3Bru -----END PGP SIGNATURE-----
