Question

2

Read only filesystem problem

rated 0 times [ 2] [ 0] / answers: 1 / hits: 3564 / 3 Years ago, mon, november 15, 2021, 2:58:45

I created a folder and I did:

chmod 777 anotherFolder/

I ran:

sudo mount -o loop folder/isoImage.iso anotherFolder/

The permissions of anotherFolder/ changed to "Read Only" and I can not chmod it back to 777, even with sudo. How can I chmod it to 777 ? It outputs me: Read Only File System.

I checked during 2 days in several forums but in vain :(

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assionortly

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4 Years ago

answered 3 Years ago suspengn · Accepted Answer

ISO file is special file format called ISO 9660. Here is quote from wikipedia

Since ISO 9660 is by design a read-only, pre-mastered file system, all
the data has to be written in one go or "session" to the medium.

So as a file system is read-only, you cannot mount it with write access.

But you can recreate ISO file, if you want.

You should mount your *.iso file somewhere

Then copy it to some temp folder

Using mkisofs util create new ISO file.

Here is a little example:

sudo mount -o loop folder/isoImage.iso anotherFolder/

mkdir new_copy_of_iso

cp -R anotherFolder/* new_copy_of_iso/

umount anotherFolder

mkisofs -R -o name_new.iso new_copy_of_iso