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macOS boot entry disappeared after trying to re-partition through Disk Utility

You're entering the wrong command. Check post #48
Started APFS operation Error: -69743: The new size must be different than the existing size
 
Started APFS operation Error: -69743: The new size must be different than the existing size
Execute the following and post the complete output

#Identify the physical disk
sudo diskutil list

#Repair the physical disk partition
sudo diskutil repairDisk disk0

#Resize the physical disk container volume
sudo diskutil apfs resizeContainer disk0s2 0
 
#Identify the physical disk
sudo diskutil list
/dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI ⁨MACEFI⁩ 274.7 MB disk0s1 2: Apple_APFS ⁨Container disk1⁩ 112.5 GB disk0s2 /dev/disk1 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +112.5 GB disk1 Physical Store disk0s2 1: APFS Volume ⁨macOS - Data⁩ 80.4 GB disk1s1 2: APFS Volume ⁨Preboot⁩ 362.4 MB disk1s2 3: APFS Volume ⁨Recovery⁩ 623.1 MB disk1s3 4: APFS Volume ⁨VM⁩ 1.1 MB disk1s4 5: APFS Volume ⁨macOS⁩ 15.3 GB disk1s5 6: APFS Snapshot ⁨com.apple.os.update-...⁩ 15.3 GB disk1s5s1 /dev/disk2 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk2 1: Windows Recovery ⁨⁩ 523.2 MB disk2s1 2: EFI ⁨NO NAME⁩ 104.9 MB disk2s2 3: Microsoft Reserved ⁨⁩ 16.8 MB disk2s3 4: Microsoft Basic Data ⁨⁩ 998.9 GB disk2s4 5: Windows Recovery ⁨⁩ 662.7 MB disk2s5 /dev/disk3 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *250.1 GB disk3 1: Windows_NTFS ⁨w10lib⁩ 250.1 GB disk3s1 /dev/disk4 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *62.0 GB disk4 1: EFI ⁨EFI⁩ 209.7 MB disk4s1 2: Apple_HFS ⁨Install macOS Big Sur⁩ 61.7 GB disk4s2
#Repair the physical disk partition
sudo diskutil repairDisk disk0
Repairing the partition map might erase disk0s1, proceed? (y/N) y Started partition map repair on disk0 Checking prerequisites Checking the partition list Adjusting partition map to fit whole disk as required Checking for an EFI system partition Checking the EFI system partition's size Checking the EFI system partition's file system Checking the EFI system partition's folder content Checking all HFS data partition loader spaces Checking booter partitions Reviewing boot support loaders Checking Core Storage Physical Volume partitions The partition map appears to be OK Finished partition map repair on disk0
#Resize the physical disk container volume
sudo diskutil apfs resizeContainer disk0s2 0
Started APFS operation Error: -69743: The new size must be different than the existing size
 
/dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI ⁨MACEFI⁩ 274.7 MB disk0s1 2: Apple_APFS ⁨Container disk1⁩ 112.5 GB disk0s2 /dev/disk1 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +112.5 GB disk1 Physical Store disk0s2 1: APFS Volume ⁨macOS - Data⁩ 80.4 GB disk1s1 2: APFS Volume ⁨Preboot⁩ 362.4 MB disk1s2 3: APFS Volume ⁨Recovery⁩ 623.1 MB disk1s3 4: APFS Volume ⁨VM⁩ 1.1 MB disk1s4 5: APFS Volume ⁨macOS⁩ 15.3 GB disk1s5 6: APFS Snapshot ⁨com.apple.os.update-...⁩ 15.3 GB disk1s5s1 /dev/disk2 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk2 1: Windows Recovery ⁨⁩ 523.2 MB disk2s1 2: EFI ⁨NO NAME⁩ 104.9 MB disk2s2 3: Microsoft Reserved ⁨⁩ 16.8 MB disk2s3 4: Microsoft Basic Data ⁨⁩ 998.9 GB disk2s4 5: Windows Recovery ⁨⁩ 662.7 MB disk2s5 /dev/disk3 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *250.1 GB disk3 1: Windows_NTFS ⁨w10lib⁩ 250.1 GB disk3s1 /dev/disk4 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *62.0 GB disk4 1: EFI ⁨EFI⁩ 209.7 MB disk4s1 2: Apple_HFS ⁨Install macOS Big Sur⁩ 61.7 GB disk4s2

Repairing the partition map might erase disk0s1, proceed? (y/N) y Started partition map repair on disk0 Checking prerequisites Checking the partition list Adjusting partition map to fit whole disk as required Checking for an EFI system partition Checking the EFI system partition's size Checking the EFI system partition's file system Checking the EFI system partition's folder content Checking all HFS data partition loader spaces Checking booter partitions Reviewing boot support loaders Checking Core Storage Physical Volume partitions The partition map appears to be OK Finished partition map repair on disk0

Started APFS operation Error: -69743: The new size must be different than the existing size
Open Disk Utility. Select the target disk and click on Partition and provide a screenshot.
 
The Volume is deleted now. The resizing has issue. I see that the ESP size has been also modified.
Hmm, I did see that but I still can't select the other part of the pie for some reason.
 
Hmm, I did see that but I still can't select the other part of the pie for some reason.
Execute the following

sudo diskutil apfs resizeContainer disk1 0
 

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