can't create '/system/xbin/busybox': Read-only file system

[123SONIC321]

Can anyone help please

[linex-17]

if /xbin folder not found, try create manual.

if using ksu, try disable all modul before.

if cant create dir cz read-only system, u can try overlayFS.

[dongyuechuwu]

overlayFS is not currently updated, and it is not possible to modify system reads and writes

[mriamnobody]

Had same issue. Created xbin folder in system using the below steps.

1. mkdir -p /system/xbin
2. mkdir -p /data/local/tmp/xbin
3. mount -t tmpfs tmpfs /data/local/tmp/xbin
4. ln -s /data/local/tmp/xbin /system/xbin
5. chmod 755 /data/local/tmp/xbin
6. ls -ld /system/xbin

[123SONIC321]

4. `ln -s /data/local/tmp/xbin /system/xbin`

cannot create symbolic link from '/data/local/tmp/xbin' to '/system/xbin/xbin': Read-only file system

[Lithiogod]

4. `ln -s /data/local/tmp/xbin /system/xbin`

cannot create symbolic link from '/data/local/tmp/xbin' to '/system/xbin/xbin': Read-only file system then mount /system r/w

[itmagpro]

Mount system as rw on Android 10 with Magisk 20.4 | XDA Forums - https://xdaforums.com/t/mount-system-as-rw-on-android-10-with-magisk-20-4.4081043/

Its due to EXT4 dedup filesystem (it's not writable).
This was pointed out by magisk developer john wu, more info: https://mobile.twitter.com/topjohnwu/status/1170404631865778177

John Wu в X: «I found out that Android 10's system images are formatted with EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS. It will deduplicate blocks in the filesystem to reduce the image size. On my Pixel XL, the partition is physically not large enough to successfully run 'e2fsck -E unshare_blocks'.» / X - https://x.com/topjohnwu/status/1170404631865778177