when i try to install while copying data it says error while copying and installation fails
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: ubiquity 19.10.21
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CasperVersion: 1.427
CurrentDesktop: ubuntu:GNOME
Date: Thu Jan 23 04:41:39 2020
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash ---
LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
ProcEnviron:
LANGUAGE=en_US.UTF-8
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)
The following messages can be found in UbiquitySyslog.txt which has been attached to this bug report:
Jan 23 09:41:19 ubuntu kernel: [ 178.001410] SQUASHFS error: zlib decompression failed, data probably corrupt
Jan 23 09:41:19 ubuntu kernel: [ 178.001415] SQUASHFS error: squashfs_read_data failed to read block 0x6ef73e
It's possible you have a bad write to your media. If you're still having problems please try the option to check the integrity of the image from the installer boot menu, and if this confirms that the media is corrupt, try rewriting it.