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Old 07-16-2006, 11:04 AM   #1
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Problem writing to windows partitions

Hello to all of you!
I have this problem :I can't write to my ntfs windows system and when I try to change permissions through rclick-permissions and it says that can't change permissions so: can i write permissions e.g chown 775 what does these number means

Thank you for reading this message
Old 07-16-2006, 11:59 AM   #2
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Linux in general does not work well with NTFS. Some kernels have support, but the "chatter" here tells me not to trust it.
Better to set up a data partition---FAT32--for shring data between Windows and Linux.

You cannot set permissions on NTFS using Linux commands (AFAIK)

chmod XXX filename: the Xs are the decimal values of the bit patterns for owner, group, and other.
All bits true = 7, read bit = 4, read + write = 6, read + execute = 5, etc.
Old 07-16-2006, 12:00 PM   #3
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Hi, writing to ntfs partitions in linux is under heavy development, hopefully we will have good write support within a year, until then it's read only by default. There are tools to do it with, have a look here:
Old 07-16-2006, 12:04 PM   #4
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You do NOT want to write to a NTFS partition in Linux. You CAN do it, but it's buggy and it will eventually mess up your partition. Windows hates it too. I would suggest that you shrink the NTFS partition and create a FAT32 partition if you want both Windows and Linux to be able to read/write it. You can do this with gparted, qtparted, cfdisk, or parted/fdisk(if you are feeling adventurous). Gparted even has a live CD that you can download, burn to CD and reboot into to change the partition table.

chown doesn't have the 775 numbers, but chmod does. The number stand for the three different types of people / groups that can access that data. The three are: User (this is the account of the person who created / downloaded the file if the owner hasn't been changed), Group (the people in a group - such as users - that may access the data), and Other (everyone that isn't the owner or in the owner's group).

When you specify permissions as numbers (ex. 775) You are using a system in which read access, write access, and execute access are weighted differently. Read is given a value of 4, write a value of 2 and execute a value of 1. These numbers are added together to give you a number between 1 and 7, and (you guessed it) the sequence of three numbers relates to the User, Group and Other we spoke about earlier. So, the 775 from earlier can be broken down like this:

U = 7 = 4+2+1 = rxw (or read, write, execute)
G = 7 = 4+2+1 = rwx (or read, write, execute)
O = 5 = 4+1 = rw (or read, execute)

A better explanation of this can be found here: (the part at the bottom is what you want)
Old 07-16-2006, 12:04 PM   #5
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Hi mihalisla,
You can look here, as this was discussed earlier : -

With Regards,
Old 07-16-2006, 12:04 PM   #6
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thank you for your replyies very much
Old 07-16-2006, 01:25 PM   #7
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thank you you were very helpfull...


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