Answer to your question is dm-verity:
The dm-verity feature lets you look at a block device, the underlying storage layer of the file system, and determine if it matches its expected configuration. It does this using a cryptographic hash tree. For every block (typically 4k), there is a SHA256 hash.
So /system and /vendor partitions are always mounted ...
On my OnePlus6, the issue was having multiple users configured.
To remove the additional user (and stay only with the default one),
I used Total Commander to see the files under /data/user. It had a folder named "10", which is the id of the additional user.
Then opened a terminal (using termux) and run:
pm remove-user 10
OnePlus 5 didn't support project Treble out of the box, so there was no /vendor partition. However with update to Android P (as explained here), said partition was created to support Treble. If you didn't undergo that OTA update, you must haven't /vendor partition on your device.
You can also create the partition yourself from within TWRP if you are a bit ...
Before Trying Below Method Check the Following Requirements –
You must have an active Internet Connection.
Must have sufficient Mobile Storage.
Check your date and time settings.
Method: Google 'Play Store Download Pending' Problem - 3 Solutions
Go to your main Mobile Settings and then find Apps.
Now, you will get a long list of installed apps. Select ...
First to clarify, Resize Partition is different than Resize File System, TWRP provides later option. It resizes the ext2/3/4 filesystem to the size of partition it's created on. Filesystem size can be checked with df command when mounted, and partition size with blockdev.
Just like HDDs or SSDs on PC, Android's eMMC storage is divided into partitions (can ...
I have found a workaround to enter in recovery.
a)Turn off device
c)We enter in bootloader mode, with volumeup key we select the "recovery" and press power
d)Device reboot to twrp
I solved my problem with this tool.
Download the zip;
Unpack the zip in a folder;
Reboot the OnePlus 6 in fastboot mode (Power and volume-);
Connect the OnePlus 6 to PC;
Run flash-all.bat flasher you need;
Wait until the process end;
The phone will automatically reboot.
You only said that your "/system" partition is wiped so it means that only your "/system" partition is clean and other partitions are untouched. You also said you used TWRP. So, I assume you still have access to TWRP.
What you would need is:
Your original CyanogenMod Custom ROM zip file
Since you didn't state your TWRP Recovery version, I ...