Error 49244 during using of ASR or Disk Utility

That can be attributed to three things;

1 - Using Disk Utilities to make a Clone of the drive will not work - period

2 - Specific to Big Sur macOS 11,  Monterey macOS 12, Ventura macOS 13, the Operating System resides in a Sealed and Read Only Volume that can not be opened by the User. Only Apple can do this and usually does some when there is a update or when upGrading to newer versions of macOS

3 - Even the Developer of a Clone Software called Carbon Copy Cloner as mentioned the ASR functionality is a Best Effort basis

Reference below

https://bombich.com/kb/ccc6/macos-monterey-known-issues

Yes and the user just provided the requested evidence.

User wrote " When I try to make a

clone of a system disk to external drive, I always get error 49244

regardless a tool I'm using - "asr" in terminal or Disk Utility. "

Phraseology - " User " out of respect to the Owner of this question.

The fact remains - using Disk Utility to Clone the drive may have works years ago in much older versions of OS X or macOS but does not work in Big Sur, Monterey or Ventura

With System 1-9 it was easy to copy a bootable system: just Finder-copy the "System Folder" to another DD floppy (and AFAIR maybe command-double-click the System file to "bless" it?).

But OS X changed all that and I have used Carbon Copy Cloner since its first versions to make bootable clones also on a silicon Mac.

"CCC uses Apple's APFS replication utility, "ASR", to establish an initial bootable clone of your startup disk."

https://bombich.com/kb/ccc5/frequently-asked-questions-about-ccc-and-macos-11

have you read

Disk Management disenter error 49244 - Apple Community

Error 49244 - Apple Community

External SSD drive on Mac - Apple Community

more

Search - Apple Community

To be fair and balanced.

Have come across this User Tip specific to ASR and Cloning

Proceed with caution and good sense

link below

How To Clone Your Mac Using ASR

👍 😀