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Miui mount memory problem

My samsung galxsy slc, with MIUI rom, cant see 8gb fat32 sd external card, with gingerbread i can see 8gb sd card and in miui no.... My phone memory is in sdcard memory...

My memory screenshot
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"lightbox_download": "Download",
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Help me pls
Help me pls...

Reply
Hi man,
Using Windows's Sh1t tools or using *nix system format your SD using:
( under linux )
Code:
#!/bin/sh
dd if=/dev/zero of=/dev/sd** # where ** are your sd's proc
fdisk /dev/sd* # * are your main device, like sdb or sdc
mkdosfs -F 32 /dev/s*** # where *** are sdb1 or sdc1
Insert again your sd into sd slot
Have u applied some init.d tweaks? like thunderbolt or same?

Isnt this my problem
I have no format problem but mount problem.... my telefon muont internel memory in phone my internal sd in sd card an my sd ist mount...i cant install app... my telephone in memory sd have internal sd memory but if i go in external sd in root explorer i find my 8gb sd... but i cant use it for app and ohter ....

This is a post from S2 forum for a similiar issue. Not sure whether it will work. But trying won't harm.
Originally Posted by ashzoomerintrack
@teo and @ arjun
Dial the following
number: *#7284# Once the last #
is hit, the PhoneUtil application is
launched.
Choose USB -> Modem
Hit back. Again enter above code.
and then USB -> PDA mode.
This should solve your problem guys
Sent from my GT-I9100G using Tapatalk
Click to expand...
Click to collapse

connection problem\
if i call this number the phone connection problem or unvalide code

pls help me
Help me pls i cant do anithing

Why
Why nobody write????

i will be crazy
i had try swap the sd but no change

pls help me
i will be crazy pls i cant do nothyng

Which miui u used ?
Try sd swap by ganesh.
It swap ur 8gb sd with ur int sd.
search b4 post. This a common issue fr 9003 miui rom, u r wasting xda server cap.
Sent from my GT-I9003 using Tapatalk 2 Beta-4

Miui used
i use 2.2.3.7 miui ...i used one of swaps sd but no change... is possible that i download a wrong swap sd,,, whem i reboot my phone at a start sd mount problem

I read MP
Nygel7 : the problem imho is your sdcard is formated with 1 partitions fat32 size 2 gb, i image you use windows, sorry i dont know how format under windows, never'used it

My sd
My sd have 1 partition 8gb in fat 32.... but i can try....but not change

Nygel7 said:
My sd have 1 partition 8gb in fat 32.... but i can try....but not change
Click to expand...
Click to collapse
LoL.
Just remove the SD Card while the phone is on and re-insert it.
THen, reboot the phone and do the same thing!
It will work

Loool
no work omg i do this at first lol ... im not idiot..

Nygel7 said:
no work omg i do this at first lol ... im not idiot..
Click to expand...
Click to collapse
You tried it when the phone is switched on?
Because, I had the same problem.
A 32-GB SD card was nt being recognized and I did this a couple of times.
The phone lagged,but, the card was recognized at last

backup your file in recovery mode.. then wipe cache and factory reset.. if your sdcard works just restore back ur data in recovery mode..

SD card partitions (mmcblk0 vs. mmcblk1?)

I can't seem to find a definitive answer on what I think is a pretty straightforward question - does the removable disk that appears in Windows Explorer contain the same exact file structure and data as the ls command run on /dev/block in adb shell?
I truly want to understand my SD card but I feel like I have been chasing my tail with the whole re-partitioning process to get an app like Link2SD to offload apps from internal storage. I have consulted various guides, learning a fair bit about ADB shell and partitioning in general, but what is tripping me up is the fact that I am not sure why my sd card reads the way it does in ADB. If I go into the shell and go to the /dev/block directory, then type LS I see the following:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I have been under the impression this entire time that, to use a program like Link2SD, the external SD card needed a 2nd partition, but if I follow every partitioning guide out there, I will be re-partitioning mmcblk0 which is the space my 2GB internal storage resides. So are these "move to SD" apps only asking for a 2nd FAT32/ext2/ext3/ext4 partition on the internal storage space (mmcblk0)?
Running parted on mmcblk0 gives:
Parted on mmcblk1 is:
Never mind that the 2 extra partitions on mmcblk0 are FAT16, but I'd like to know what mmcblk0/blk1 really are, if they are not actual partitions on the card (the partitions are shown as p1,p2,etc), and if by backing up the SD card to Windows, I truly have everything backed up so that if I format and re-partition mmcblk0, I can re-copy my files back to the SD card. It SEEMS like what I see in Windows and what ADB tells me should be one in the same, but I have a feeling that the removable disk I see in Win Explorer is actually mmcblk1 and therefore re-formatting mmcblk0 would result in lost data unless there is some way to backup and restore it.
Sorry if this sounds so noob-ish but trust me, 48 hours ago it would have sounded a lot worse...
Thanks.

what is mmcblk0 ?
Brianakin said:
Never mind that the 2 extra partitions on mmcblk0 are FAT16, but I'd like to know what mmcblk0/blk1 really are, if they are not actual partitions on the card (the partitions are shown as p1,p2,etc), and if by backing up the SD card to Windows, I truly have everything backed up so that if I format and re-partition mmcblk0, I can re-copy my files back to the SD card. It SEEMS like what I see in Windows and what ADB tells me should be one in the same, but I have a feeling that the removable disk I see in Win Explorer is actually mmcblk1 and therefore re-formatting mmcblk0 would result in lost data unless there is some way to backup and restore it.
Sorry if this sounds so noob-ish but trust me, 48 hours ago it would have sounded a lot worse...
Thanks.
Click to expand...
Click to collapse
I have pretty much the same question.
I have been able to confirm that my SD card is indeed mmcblk1. I can mount the partitions on that device and see all the junk I have saved to the card. On my system, mmcblk0 does not seem to exist. Since the /etc/fstab has the /cache and /data on partitions for that device, I can't boot the phone at all right now.
- Is this truly a hardware failure?
- Is mmcblk0 the internal storage?
- Can I re-partition my SDCard and edit FSTAB to point to the new partitions?

On the GT-I9100 mmcblk0 is the internal NAND (which contains 12 partitions, one of which is the internal sd card). mmcblk1 is the external sd card device. LINK2SD is hardcoded to look for mmcblk1p2.

[GUIDE] How to Swap Internal SD card With External SD card

As the title says im going to show you how to configure the Root External 2 Internal SD app properly to swap Internal Memory with External
Things You Need
1.Root External 2 Internal SD || Download it From Here
2.A Rooted Galaxy Young || How to Root Galaxy Young
SO LETS BEGAIN
After Installing Root External 2 Internal SD launch the app from your app drawer, you will see this Screen
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Tap on Settings
Under Settings Check on Send Rescan and Use per default
then Tap on The Original Internal Mounting Point and change
Code:
/mnt/sdcard to /storage/sdcard0
This
To This
then Tap on The Original External Mounting Point and change
Code:
/mnt/extSdCard to /storage/extSdCard
This
To This
after that tap on The ext.sdcard device access and Change
Code:
/dev/block/vold/179:49 to /dev/block/vold/179:33
This
To This
the just go back to main screen and tap on
External > Internal
THATS IT!!
BEFORE
AFTER
ENJOY:highfive:​

Nice guide Bro..:good:

vlc07 said:
Nice guide Bro..:good:
Click to expand...
Click to collapse
Cheers

[REPORT] External 2 internal APK
on my device set onboot checked NOT WORKING. But its working when i push External > Internal button.
[UPDATE]
and after few hours experimenting FOUND a way ! to switch internal as external on boot but this method has a BUG here the BUG list :
1. when we look to settings->storage the storage bar is changing frequently or show full.
2. MTP does not start or in your windows 7 PC on my computer your devices storage not visible.
Here how i do it :
1. Must support init.d script
2. create this script and save to /etc/init.d folder :
Code:
#!/system/bin/sh
if [ -e /dev/block/mmcblk1p1 ]
then
mount -o bind /data/media /storage/extSdCard
mount -t vfat -o umask=0000 /dev/block/mmcblk1p1 /storage/sdcard0
fi;
Note : i suggest the apk method its safer and less frustating creating init.d support for your device

inogbox said:
on my device set onboot checked NOT WORKING. But its working when i push External > Internal button.
[UPDATE]
and after few hours experimenting FOUND a way ! to switch internal as external on boot but this method has a BUG here the BUG list :
1. when we look to settings->storage the storage bar is changing frequently or show full.
2. MTP does not start or in your windows 7 PC on my computer your devices storage not visible.
Here how i do it :
1. Must support init.d script
2. create this script and save to /etc/init.d folder :
Code:
#!/system/bin/sh
if [ -e /dev/block/mmcblk1p1 ]
then
mount -o bind /data/media /storage/extSdCard
mount -t vfat -o umask=0000 /dev/block/mmcblk1p1 /storage/sdcard0
fi;
Note : i suggest the apk method its safer and less frustating creating init.d support for your device
Click to expand...
Click to collapse
Thanks for the update bro even i have a init script which swaps memory on boot, but if you use that script sometimes phones does not run the media scan which sucks because there is not any way to trigger it manually tried many apps but it didn't worked that's why i posted this method instead of script
Cheers

r2dak said:
...... sometimes phones does not run the media scan which sucks because there is not any way to trigger it manually tried many apps but it didn't worked that's why i posted this method instead of script
Cheers
Click to expand...
Click to collapse
Yes its true on media scaner, and AGAIN i totally agree with you after that i found some something else THE CAMERA CANNOT SAVE the PICTURE I SHOOT.

inogbox said:
Yes its true on media scaner, and AGAIN i totally agree with you after that i found some something else THE CAMERA CANNOT SAVE the PICTURE I SHOOT.
Click to expand...
Click to collapse
if you are using external2internal app then do this restart your phone after the phone is properly booted up don't do anything (i.e don't swap the memory) then run inbuilt music player and then close it after that open camera see if its working fine than close it too, then swap the memory this works most of times and remember after swapping memory media scanner works slower so give it atleast 2 3 mins to update

THE CAMERA CANNOT SAVE the PICTURE I SHOOT
in my previous post is for my script not using external2internal app. For clarification need.
But now i try to disable fuse for sdcard in build.prop to manually trigger media scaner
Code:
persist.fuse_sdcard=false
and i update the init.d script like this
Code:
#!/system/bin/sh
if [ -e /dev/block/mmcblk1p1 ]
then
mount -o bind,umask=0000 /data/media /storage/extSdCard
mount -t vfat -o umask=0000 /dev/block/mmcblk1p1 /storage/sdcard0
else
mount -o bind,umask=0000 /data/media /storage/sdcard0
fi;
everything seems works perfect with mmc attached and phone srorage as camera save path. BUT has problem without external MMC : camera can save pictures but gallery cannot read the pictures.. the problem is the file owner and file permission on the root explorer it say rw-------- in other word just the owner can view this file. So i try to change permision on that picture and YES it can show on gallery.

Hi I have Panasonic P55 with kitkat 4.4.2 with internal SD and apps do not load on Ext SD.
Is this only solution? Please provide App link as it is no more on Play store

Vipuljain_in said:
Hi I have Panasonic P55 with kitkat 4.4.2 with internal SD and apps do not load on Ext SD.
Is this only solution? Please provide App link as it is no more on Play store
Click to expand...
Click to collapse
Use link2sd it's better it's available at playstore for free and there is a paid ad-free version

help please
I currently own a Verizon Tablet Ellipsis 8 QTAQZ3 with KOT49H build. Finally a root method that works is KINGROOT. My issue is that I cant swap the internal with external as I am told that even updating UTUBE not enough space. Even with 6 gigabytes left. I have a 64gb class 10 sd card.When I look at dev/block/vold, I see 2 numbers 179:96 and 197:97. The tablet has no recovery made for it (yet). All my apps are on internal storage (partition, I think). I have read that internal and external are both the same. Please clarify, and can you please help.

wally18324 said:
I currently own a Verizon Tablet Ellipsis 8 QTAQZ3 with KOT49H build. Finally a root method that works is KINGROOT. My issue is that I cant swap the internal with external as I am told that even updating UTUBE not enough space. Even with 6 gigabytes left. I have a 64gb class 10 sd card.When I look at dev/block/vold, I see 2 numbers 179:96 and 197:97. The tablet has no recovery made for it (yet). All my apps are on internal storage (partition, I think). I have read that internal and external are both the same. Please clarify, and can you please help.
Click to expand...
Click to collapse
There is a xposed module called "XinternalSD" it will do the same as this app but it doesn't need any messing with settings...just download it and activate it and toggle it from it's settings.
But this will keep installing apps in tge internal memory so you may also need an app like link2sd or S2E .

Failure
Mr said:
There is a xposed module called "XinternalSD" it will do the same as this app but it doesn't need any messing with settings...just download it and activate it and toggle it from it's settings.
But this will keep installing apps in tge internal memory so you may also need an app like link2sd or S2E .
Click to expand...
Click to collapse
App2sd is not supported by your device. Because your device has a primary external storage which is emulated from the internal storage. Still trying though. Any insight.

wally18324 said:
App2sd is not supported by your device. Because your device has a primary external storage which is emulated from the internal storage. Still trying though. Any insight.
Click to expand...
Click to collapse
Don't use the 'move to sd" feature...as it won't work on alot of devices.
Instead chose "link to sd card" as it is the main feature of link2sd app, were the whole app gets moved to sdext. (You must have a partioned sdcard, partioning sdcard is so much easy and safe, you can use google/YouTube to get more details about partioning sdcard).
Press thanks [emoji106] if I helped [emoji6]
Sent from my GT-I9500 using Tapatalk

Mr said:
Don't use the 'move to sd" feature...as it won't work on alot of devices.
Instead chose "link to sd card" as it is the main feature of link2sd app, were the whole app gets moved to sdext. (You must have a partioned sdcard, partioning sdcard is so much easy and safe, you can use google/YouTube to get more details about partioning sdcard).
Press thanks [emoji106] if I helped [emoji6]
Sent from my GT-I9500 using Tapatalk
Click to expand...
Click to collapse
thanks for your quick response. I will do that, do I just need one partition for ext4.

wally18324 said:
thanks for your quick response. I will do that, do I just need one partition for ext4.
Click to expand...
Click to collapse
You need a ext4 partion (sdext that will be used with link2sd), (it will be hidden), (make it good sized it must be bigger than 512mb to be useful, and I prefer that you make more than 1GB if you have a sdcard bigger than 16GB)
And the other partion will be fat/fat32 and it will be your system mountable sdcard partion (this partion is the one that you can put your media files on and move games obb and extdata to), (shown as extsdcard ir sdcard2), (make the file system "fat" if this partion was 2GB or smaller, if this partion is 4GB or bigger use "fat32")
Sent from my GT-I9500 using Tapatalk

Mr said:
You need a ext4 partion (sdext that will be used with link2sd), (it will be hidden), (make it good sized it must be bigger than 512mb to be useful, and I prefer that you make more than 1GB if you have a sdcard bigger than 16GB)
And the other partion will be fat/fat32 and it will be your system mountable sdcard partion (this partion is the one that you can put your media files on and move games obb and extdata to), (shown as extsdcard ir sdcard2), (make the file system "fat" if this partion was 2GB or smaller, if this partion is 4GB or bigger use "fat32")
Sent from my GT-I9500 using Tapatalk
Click to expand...
Click to collapse
I used a 32gb sd card. After some research found out the tablet does not support more than a 32gb card. I was using a 64gb card. There are 2 partitions , 1st 28gb fat32 for media files, 2nd sdext2 about 3.5 gbs. I am on rooted stock so I used ext 2. worked like a charm. Used the link to sd. But I tried to move the Zedge data says Failure Link2sd package invalid. But beside that its ok. Unless I am missing something. Thanks for all the help and patience.

I have a GT-S7562
After swapping sd card....... the apps are not installing to extsd card
what should i do ????

Praveen125 said:
I have a GT-S7562
After swapping sd card....... the apps are not installing to extsd card
what should i do ????
Click to expand...
Click to collapse
This is only for app data not apps itself to move apps to extsd card watch my video

I know it but the app data is also installing on internal storage
Sent from my GT-S7562 using XDA Free mobile app

Samsung a01 move app to sd card

Hello guys i want say how move apps to sd card with data and cache
Before do this make full backup as your *data in sd card*
Ok lets do this
Go info phone and able development tools
Next able unlock oem next able usb debug
Now connect to your computer and connect your CMD to adb
Now type adb devices list and see your phone is connected safely or no
Now type adb shell
Next type Sm list-disks
See your sd card id
Now type sm set-force-adoptable on
And now good listen for better understanding i have 100gb sd card so i want use 20 gb for device and other gb i want use normally so i type
sm partition disk: (id sd card) mixed 80
My id sd card is for example 179:68 so
sm partition disk:179:68 mixed 80
Ok now wait one min for format sd card next type sm set-force-adoptable off
Now type reboot
After reboot system you should go development tools and able force allow apps on external
Ok now go apps and click on one installed app ans next click on storage and change to sd card
I hope this be helpful
I learned from this Persian site(because im Iranian) http://www.tabnaksemnan.ir/fa/news/883667/چگونه-از-حافظه-sd-به-عنوان-حافظه-داخلی-گوشی-هوشمند-استفاده-کنیم
YouTube video for format sd card to internal storage (he type Private its mean use 100% sd card to internal storage and you cant able use sd card for copy any file on sd card )
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

You can partition SD Card and use as internal storage. Now you can install apps directly to SD card.
In Marshmallow, You can move apps to SD card.
Go to setting / apps manager / select app / storage / move to SD card.

Mobilelearner said:
You can partition SD Card and use as internal storage. Now you can install apps directly to SD card.
In Marshmallow, You can move apps to SD card.
Go to setting / apps manager / select app / storage / move to SD card.
Click to expand...
Click to collapse
Yes bro and this android is 10

How to move apps to sd card no pc

Dannirhea13 said:
How to move apps to sd card no pc
Click to expand...
Click to collapse
Root your phone and input this codes to terminal shell
But first you should type su next inter next use codes

Gharibeeeee said:
Hello guys i want say how move apps to sd card with data and cache
Before do this make full backup as your *data in sd card*
Ok lets do this
Go info phone and able development tools
Next able unlock oem next able usb debug
Now connect to your computer and connect your CMD to adb
Now type adb devices list and see your phone is connected safely or no
Now type adb shell
Next type Sm list-disks
See your sd card id
Now type sm set-force-adoptable on
And now good listen for better understanding i have 100gb sd card so i want use 20 gb for device and other gb i want use normally so i type
sm partition disk: (id sd card) mixed 80
My id sd card is for example 179:68 so
sm partition disk:179:68 mixed 80
Ok now wait one min for format sd card next type sm set-force-adoptable off
Now type reboot
Click to expand...
Click to collapse
Well I've tried hundreds of time in my Samsung a01 with a Kingston 128gb and the result is always a corrupted sd card:

Does it need to root the phone first? From my point of view, looks like it doesn't need to.

r0bertinski said:
Well I've tried hundreds of time in my Samsung a01 with a Kingston 128gb and the result is always a corrupted sd card:
View attachment 5298869View attachment 5298861
Click to expand...
Click to collapse
it also happened to me maybe u didn't reformat your sd card before doing the process

i did private partition but whenever i move the app it says sd card storage is not enough

Android 12: SD Card Formatted as Internal Storage: How to undo and remove?

Hello,
When I first setup my tablet (Lenovo Yoga Tab 11), I added an SD Card and formatted it to act as additional internal storage. Now I realize that's probably not the best for performance, so would like to unmount it. However, I realized in the Storage tab for the SD Card, there is only an "Eject" feature but that comes with the warning that all Apps and Media that's on the SD Card would be lost. There does not appear to be a way to migrate all this data back to the main storage.
So I'm wondering what's the best way to remove the SD card that's been formatted for internal storage? There's 4GB of Apps and 1GB of "System" files, but there's no breakdown of what exactly this is. Is it safe to use the "Eject" feature, test to see which apps still work, and simply reinstall any app that may not be functional? Or would this potentially cause any corruption issues?
Would love to hear your thoughts. Thanks!

That was a bad plan as you already had at least 128gb of internal storage. You use the SD card as a data drive only. The bandwidth of the SD card slot is significantly slower than that of the internally memory. Only the OS, apps, the dcim and download folders should go on internal memory, the critical data goes on the data drive.
If the apps on the SD card allow for backup, do so with an external drive. Those apps may need to be reinstalled after the card is removed. Hopefully it won't crash the system; make sure all critical data is redundantly backed up. Format the SD card before using with the new configuration.

blackhawk said:
That was a bad plan as you already had at least 128gb of internal storage...
Click to expand...
Click to collapse
Yea that's what I figure, hence I want to undo it. I went ahead and tried the "Eject" feature, pulled the SD, and tested every app. Everything seemingly seems to still work just fine. Which is weird because on the SD Card, it says there's 4GB worth of "App" stuff and 1GB of "System". Weird.

in - settings - apps - select each app on it's own. in the storage section, there should be option to move app (native App2SD button)
after moving back each app to phone storage, do a backup to PC with adb (usb debugging and platform-tools required)
Code:
adb pull -a /sdcard
now you can 'forget' SD Card in settings and create new partition by formatting as portable.
you can also do from adb shell
(commands may vary)
Code:
adb shell
sm list-disks
sm list-volumes
sm set-force-adoptable false
sm partition disk:xxx,yy public
sm format public:xxx,yy
sm mount public:xxx,yy
double check SD Card is available under /storage/????-????
you can now copy back your pictures from PC to MicroSD Card

AFAIK since Android 2 an app can only get moved to external storage ( SD-card ) - either via Android Settings->Apps or via 3rd-party tools like Link2SD / App2SD and many others -if app's developer allow this.
Code:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
android:installLocation="preferExternal"
... >
That's also true if you programmaticaly set app's install location to external storage ( SD-card )
Code:
adb devices
adb shell "pm set-install-location 2"
Note:
When your application is installed on the external storage:
There is no effect on the application performance so long as the external storage is mounted on the device.
The .apk file is saved on the external storage, but all private user data, databases, optimized .dex files, and extracted native code are saved on the internal storage memory.
The unique container in which your application is stored is encrypted with a randomly generated key that can be decrypted only by the device that originally installed it. Thus, an application installed on an SD-card works for only one device.

aIecxs said:
in - settings - apps - select each app on it's own. in the storage section, there should be option to move app (native App2SD button)
Click to expand...
Click to collapse
Thanks. I actually searched everywhere for this already. Neither in the App page (or sub menus) nor the Storage page makes any reference to where the data is stored, nor any option to move between internal or SD storage.

jwoegerbauer said:
When your application is installed on the external storage:
There is no effect on the application performance so long as the external storage is mounted on the device.
The .apk file is saved on the external storage, but all private user data, databases, optimized .dex files, and extracted native code are saved on the internal storage memory.
Click to expand...
Click to collapse
I wonder if this explains why although I've ejected the SD card, that every app seemingly still works fine. I literally cannot find any evidence of corruption or data loss. This has me stumped because the Storage page clearly says there's 4GB of App data and 1GB of System data on this SD Card. But there's no further breakdown on what that actually is.
Apps I can reinstall, but what that 1GB of System data that I've removed is more concerning.

as @jwoegerbauer stated it depends on android:installLocation in AndroidManifest.xml file on per app base (and requires Adoptable Storage)
So usually that is a two step process
1) format as internal
2) migrate data (move apps)
the second step can be done for "all" existing apps same time at once with "Migrate Data" button (new apps are installed to prefered install location automatically)
does not concern apps that do not allow this in its Manifest
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
it's possible to override Manifest settings in developer options
Note: some UI don't provide the "Migrate Data" button in settings (like Samsung OneUI)
if adopted storage is available and app allowed in manifest, you should see the current location of app storage in -> Settings -> Apps -> (Facebook) -> Storage. with the "Change" button you can move the app between internal storage and adopted storage forwards and backwards
(naming and layout vary)
However, you already erased MicroSD Card so it seems the apps just lost their Shared Storage /sdcard/Android which do not contain essential data (only media and backup files)
for example WhatsApp directory
/sdcard/Android/media/com.whatsapp/WhatsApp/Media/
contains all pictures you downloaded within the app, so pictures older than 4 months probably got lost.

speedboxx said:
I wonder if this explains why although I've ejected the SD card, that every app seemingly still works fine. I literally cannot find any evidence of corruption or data loss. This has me stumped because the Storage page clearly says there's 4GB of App data and 1GB of System data on this SD Card. But there's no further breakdown on what that actually is.
Apps I can reinstall, but what that 1GB of System data that I've removed is more concerning.
Click to expand...
Click to collapse
Ejecting and reinserting a SD-card doesn't corrupt its content, if it's correctly handled.

speedboxx said:
I wonder if this explains why although I've ejected the SD card, that every app seemingly still works fine. I literally cannot find any evidence of corruption or data loss. This has me stumped because the Storage page clearly says there's 4GB of App data and 1GB of System data on this SD Card. But there's no further breakdown on what that actually is.
Apps I can reinstall, but what that 1GB of System data that I've removed is more concerning.
Click to expand...
Click to collapse
Maybe go into the sdcard storage using an explorer and see what is in there?

If you from PC want to inspect contents of both internal storage and an SD-card converted to portable storage in Android phone USB option must be set to MTP to see all contents on both the portable storage and internal storage.

Right. But one can't see both on adoptable storage, it's either or then.
symlink /sdcard is pointing to ->
/storage/emulated/0
which is either ->
/data/media/0
or ->
/mnt/expand/6fe8c926-fda9-476d-822c-f7d5856d1847/media/0
(something like that)

aIecxs said:
Right. But one can't see both on adoptable storage, it's either or then.
symlink /sdcard is pointing to ->
/storage/emulated/0
which is either ->
/data/media/0
or ->
/mnt/expand/6fe8c926-fda9-476d-822c-f7d5856d1847/media/0
(something like that)
Click to expand...
Click to collapse
If you use Total Commander ( a dual pane explorer ) - what can MTP - on Windows PC you have a left / right scenario to watch content of both storage locations simultaneously.