Comment 32 for bug 172937

It seems like this error is often memory-related, but the error messages indicate it's usually bad media. Is it possible to add the possibility of bad memory to the error message? The pop-up error I got was:

"The installer encountered an error copying files to the hard disk: [Errno 5] Input/output error
This is often due to a faulty CD/DVD disk or drive, or a faulty hard disk. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed, to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment."

But dmesg had the following:
[ 1228.553400] kjournald starting. Commit interval 5 seconds
[ 1228.553598] EXT3 FS on sda5, internal journal
[ 1228.553605] EXT3-fs: mounted filesystem with ordered data mode.
[ 1349.994012] SQUASHFS error: zlib_inflate returned unexpected result 0xfffffffd, srclength 131072, avail_in 352, avail_out 92175
[ 1349.994024] SQUASHFS error: sb_bread failed reading block 0x77162
[ 1349.994029] SQUASHFS error: Unable to read fragment cache block [1dc4df1a]
[ 1349.994035] SQUASHFS error: Unable to read page, block 1dc4df1a, size a972

If the error message is going to be helpful enough to suggest a solution, it would help to include both probable solutions. Otherwise people are chasing the idea that the media is bad when it isn't.