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Why does my usb ntfs HD only mount read only?
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philip
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PostPosted: Tue Aug 26, 2014 6:35 pm    Post subject: Why does my usb ntfs HD only mount read only? Reply with quote

I am trying to mount a new external USB HD, formatted with ntfs, with read and write permissions

# mount -t ntfs -o rw /dev/sdi1 /media
mount: warning: /media seems to be mounted read-only.


Code:
# cat  /etc/mtab

/dev/sdi1 /media ntfs ro 0 0


Do I need ntfs3g? Will ntfs3g be good for all ntfs variants. I hesitate to unmerge sys-fs/ntfsprogs


Code:
# emerge ntfs3g

 * IMPORTANT: 6 news items need reading for repository 'gentoo'.
 * Use eselect news to read news items.

 * Last emerge --sync was 57d 22h 22m 39s ago.
Calculating dependencies... done!
[ebuild  N     ] sys-fs/fuse-2.9.3  USE="examples -static-libs"
[ebuild  N     ] sys-fs/ntfs3g-2013.1.13  USE="acl external-fuse ntfsprogs -debug -ntfsdecrypt -static-libs -suid -xattr"
[blocks B      ] sys-fs/ntfsprogs ("sys-fs/ntfsprogs" is blocking sys-fs/ntfs3g-2013.1.13)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

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xaviermiller
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PostPosted: Tue Aug 26, 2014 6:39 pm    Post subject: Reply with quote

yes, you need ntfs3g in order to have write access. Remove ntfs-progs, and install ntfs3g.
And disable the ntfs support in the kernel.
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Xavier Miller
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philip
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PostPosted: Tue Aug 26, 2014 6:48 pm    Post subject: Reply with quote

Would an alternative be to set CONFIG_NTFS_RW=y ?

Code:
# grep NTFS .config
CONFIG_NTFS_FS=y
# CONFIG_NTFS_DEBUG is not set
# CONFIG_NTFS_RW is not set

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NeddySeagoon
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PostPosted: Tue Aug 26, 2014 7:39 pm    Post subject: Reply with quote

philip,

No. CONFIG_NTFS_RW only permits you to change the contents of an existing file without changing its size.
Kernel write support for ntfs has always been unsafe. This restriction has made it safe.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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philip
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PostPosted: Tue Aug 26, 2014 8:49 pm    Post subject: Reply with quote

OK, thanks for advice
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