System hangs when creating bootable disk drive

I followed the instructions provided in this answer which explains how to make an El Capitan bootable disk from a system running Catalina I copied the commands exactly as prescribed, reproduced here: pkgutil --expand /Volumes/Install\ OS\ X/InstallMacOSX.pkg ~/Desktop/El\ Capitan diskutil eject Install\ OS\ X cd ~/Desktop/El\ Capitan hdiutil attach InstallMacOSX.pkg/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/esd sudo asr restore -source /Volumes/esd/BaseSystem.dmg -target /Volumes/MyVolume -noprompt -noverify -erase diskutil rename OS\ X\ Base\ System Install\ El\ Capitan rm /Volumes/Install\ El\ Capitan/System/Installation/Packages cp -rp /Volumes/esd/Packages /Volumes/Install\ El\ Capitan/System/Installation cp -rp /Volumes/esd/BaseSystem.chunklist /Volumes/Install\ El\ Capitan/ cp -rp /Volumes/esd/BaseSystem.dmg /Volumes/Install\ El\ Capitan/ hdiutil detach /Volumes/esd sudo bless --folder /Volumes/Install\ El\ Capitan/System/Library/CoreServices --label Install\ El\ Capitan cp /Volumes/Install\ El\ Capitan/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/InstallAssistant.icns /Volumes/Install\ El\ Capitan/.VolumeIcon.icns diskutil eject Install\ El\ Capitan However it hangs at the last line. Here is the output: pkgutil --expand /Volumes/Install\ OS\ X/InstallMacOSX.pkg ~/Desktop/El\ Capitan diskutil eject Install\ OS\ X cd ~/Desktop/El\ Capitan hdiutil attach InstallMacOSX.pkg/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/esd sudo asr restore -source /Volumes/esd/BaseSystem.dmg -target /Volumes/MyVolume -noprompt -noverify -erase diskutil rename OS\ X\ Base\ System Install\ El\ Capitan rm /Volumes/Install\ El\ Capitan/System/Installation/Packages cp -rp /Volumes/esd/Packages /Volumes/Install\ El\ Capitan/System/Installation cp -rp /Volumes/esd/BaseSystem.chunklist /Volumes/Install\ El\ Capitan/ cp -rp /Volumes/esd/BaseSystem.dmg /Volumes/Install\ El\ Capitan/ hdiutil detach /Volumes/esd sudo bless --folder /Volumes/Install\ El\ Capitan/System/Library/CoreServices --label Install\ El\ Capitan cp /Volumes/Install\ El\ Capitan/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/InstallAssistant.icns /Volumes/Install\ El\ Capitan/.VolumeIcon.icns diskutil eject Install\ El\ Capitan Could not open package for expansion: /Volumes/Install OS X/InstallMacOSX.pkg Unable to find disk for Install OS X /dev/disk3 GUID_partition_scheme /dev/disk3s1 EFI /dev/disk3s2 Apple_HFS /Volumes/esd Password: Validating target...done Validating source...done Retrieving scan information...done Validating sizes...done Restoring ....10....20....30....40....50....60....70....80....90....100 Restored target device is /dev/disk2s1. Remounting target volume...done asr: Couldn't personalize volume /Volumes/OS X Base System - State not recoverable Volume on disk2s1 renamed to Install El Capitan Does anyone have any idea why that might happen?