[SOLVED] Issues while trying to set up an exFAT shared disk

LeonN · 2024-04-19 04:44:06

I installed Arch and Windows on dual boot successfully and I want my 1TB hard disk to be a common partition for both OSs so I can share files and put common stuff there. I read that the best option was exFAT, so I decided to format it like that. the partition is /dev/sda2:

sblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    0 931.5G  0 disk
├─sda1        8:1    0     8G  0 part [SWAP]
└─sda2        8:2    0 923.5G  0 part /home/leo/Files
nvme0n1     259:0    0 119.2G  0 disk
├─nvme0n1p1 259:1    0   550M  0 part /boot
├─nvme0n1p2 259:2    0    16M  0 part
├─nvme0n1p3 259:3    0  41.7G  0 part
├─nvme0n1p4 259:4    0   535M  0 part
└─nvme0n1p5 259:5    0  76.5G  0 part /

It is already added to my partition table:

# /dev/nvme0n1p5
UUID=027a8657-6b66-464c-bb6e-9f0ab0d9ffc8	/         	ext4      	rw,relatime	0 1

# /dev/nvme0n1p1 LABEL=SYSTEM
UUID=1AFB-9C0B      	/boot     	vfat      	rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro	0 2

# /dev/sda2
UUID=7E7B-E954      	/home/leo/Files	exfat     	rw,relatime,fmask=0022,dmask=0022,iocharset=utf8,errors=remount-ro	0 2

# /dev/sda1
UUID=2fbe5ddb-23dd-4f70-9be5-c96b9f4d769d	none      	swap      	defaults  	0 0

It is also already recognized and mounted by Windows.
The problem is that, in Windows, I can create, delete and edit files freely; but, in Linux, I need sudo permission to do it. I tried changing the ownership of the entire mount point, but I get this error:

sudo chown -R leo:leo ~/Files/
[sudo] password for leo:
chown: changing ownership of '/home/leo/Files/pagefile.sys': Operation not permitted
chown: changing ownership of '/home/leo/Files/DumpStack.log.tmp': Operation not permitted
chown: changing ownership of '/home/leo/Files/$RECYCLE.BIN/desktop.ini': Operation not permitted
chown: changing ownership of '/home/leo/Files/$RECYCLE.BIN/$IRSYD7R': Operation not permitted
chown: changing ownership of '/home/leo/Files/$RECYCLE.BIN/$RRSYD7R': Operation not permitted
chown: changing ownership of '/home/leo/Files/$RECYCLE.BIN/$I0QLOZY': Operation not permitted
...

Last edited by LeonN (2024-04-24 23:10:38)

mpan · 2024-04-19 05:29:34

The last command is not changing permissions of the mount point (the directory “/home/leo/Files”), but contents of the mounted filesystem. And this is why it fails: exFAT doesn’t support POSIX ownership/permissions.

Since these are not supported, it also means mount must fake both ownership and permissions data. By default it’s root:root. Mount options `uid=` and `gid=` are used to set uid:gid to the desired value.

LeonN · 2024-04-19 13:29:58

So, I should add the uid and gid properties in my fstab, right? Being this the result:

# /dev/sda2
UUID=7E7B-E954      	/home/leo/Files	exfat     	rw,relatime,fmask=0022,dmask=0022,iocharset=utf8,errors=remount-ro,uid=leo,gid=leo	0 2

mpan · 2024-04-20 02:41:20

Yes, but `uid` and `gid` are numerical.

LeonN · 2024-04-24 23:10:14

sorry for the late reply. I've been really busy these days. Anyways, thanks for your help. I managed to solve the issue. Here are the steps I followed.

Find my user uid and gid:

id leo
uid=1000(leo) gid=1000(leo) groups=1000(leo),998(wheel),996(audio),987(storage),985(video)

Unmounted the partition to edit:

umount -R /home/leo/Files

Edited /etc/fstab

sudo nano /etc/fstab

# /dev/sda2
UUID=7E7B-E954      	/home/leo/Files	exfat     	rw,relatime,fmask=0022,dmask=0022,iocharset=utf8,errors=remount-ro,uid=1000,gid=1000	0 2

And rebooted

Arch Linux

#1 2024-04-19 04:44:06

[SOLVED] Issues while trying to set up an exFAT shared disk

#2 2024-04-19 05:29:34

Re: [SOLVED] Issues while trying to set up an exFAT shared disk

#3 2024-04-19 13:29:58

Re: [SOLVED] Issues while trying to set up an exFAT shared disk

#4 2024-04-20 02:41:20

Re: [SOLVED] Issues while trying to set up an exFAT shared disk

#5 2024-04-24 23:10:14

Re: [SOLVED] Issues while trying to set up an exFAT shared disk

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