Execution Errors when duplicating Hard Drive on external HD....

Question

Hello
I've got an Iomega Firewire portable HD, I wanted to duplicate my iMac Hard Drive so that I can free up some memory and use it as a back up. I know there are lots of backup software programmes out there but I installed and used the Retrospect Express programme that came with the portable HD.
I followed the instructions, left it dupliacting overnight and it all seems to have worked lovely but I had a window open this morning titled 'Execution Errors'. It said there were 5 errors during duplication and lists some folders & files:
MacHD>Library>Caches root/admin
com.apple.LaunchServices-0140.csstore
com.apple.LaunchServices-014501.csstore
private>var>db root/wheel
.dashboardadvisory.database
dashboardadvisory.database
run root/daemon
ntp.drift
Please help?! Does this all mean anything significant?
Should I be concerned about the duplication that I've done and is it safe to trash files from my iMac HD now I have the duplicated version on my Portable HD?
Thanks and best wishes

Answer 1

Thanks.
I verified the HD (while booted from it) and it didn't tell me to do anything, I think it was fine [sorry to sound so dumb, I should have written the results down] it said it was okay so I assumed any errors had been corrected without me having to address them. Then I verified permissions, again this seemed to go okay, response was alright and didn't tell me to do anything.
I ran the duplicate procedure agin overnight, having re-partioned my external hard drive.
I had tried this twice before over the weekend and received the same 5 Execution Errors both times.
This morning I have checked and it has duplicated the HD onto my external okay but I have 16 Execution Errors. I have found them in the Operations log and pasted them below. A lot of them seem to be discrepencies between data size or creation date/time between 'src' and 'dest'.
Would 'src' be my iMac?
If anyone can help identify what the errors mean and if there are implications for the data I have backed up I'd be very grateful!
+ Executing Immediate Duplicate at 18/8/2009 00:54
- 18/8/2009 00:54:19: Copying Macintosh HD…
18/8/2009 02:48:37: Comparing Portable_HD…
File “com.apple.LaunchServices-0140.csstore”: different creation date/time (src: 18/8/2009 02:18:36, dest: 18/8/2009 01:08:16), path: “Macintosh HD/Library/Caches/com.apple.LaunchServices-0140.csstore”.
File “com.apple.LaunchServices-014501.csstore”: different creation date/time (src: 18/8/2009 02:52:16, dest: 18/8/2009 01:28:34), path: “Macintosh HD/Library/Caches/com.apple.LaunchServices-014501.csstore”.
File “local.nidump”: different modification date/time (src: 18/8/2009 03:15:10, dest: 17/8/2009 04:27:43), path: “Macintosh HD/private/var/backups/local.nidump”.
File “asl.log”: different data size (src: 95,312, dest: 99,307), path: “Macintosh HD/private/var/log/asl.log”.
File “daily.out”: different data size (src: 852,248, dest: 850,530), path: “Macintosh HD/private/var/log/daily.out”.
File “mail.log”: different data size (src: 1110, dest: 987), path: “Macintosh HD/private/var/log/mail.log”.
File “system.log”: different data size (src: 108, dest: 21,458), path: “Macintosh HD/private/var/log/system.log”.
File “system.log.0.gz”: different data size (src: 4258, dest: 4178), path: “Macintosh HD/private/var/log/system.log.0.gz”.
File “system.log.1.gz”: different data size (src: 4178, dest: 1557), path: “Macintosh HD/private/var/log/system.log.1.gz”.
File “system.log.2.gz”: different data size (src: 1557, dest: 1013), path: “Macintosh HD/private/var/log/system.log.2.gz”.
File “system.log.3.gz”: different data size (src: 1013, dest: 5346), path: “Macintosh HD/private/var/log/system.log.3.gz”.
File “system.log.4.gz”: different data size (src: 5346, dest: 1690), path: “Macintosh HD/private/var/log/system.log.4.gz”.
File “system.log.5.gz”: different data size (src: 1690, dest: 4010), path: “Macintosh HD/private/var/log/system.log.5.gz”.
File “system.log.6.gz”: different data size (src: 4010, dest: 1187), path: “Macintosh HD/private/var/log/system.log.6.gz”.
File “system.log.7.gz”: different data size (src: 1187, dest: 1029), path: “Macintosh HD/private/var/log/system.log.7.gz”.
File “ntp.drift”: different creation date/time (src: 18/8/2009 03:40:28, dest: 18/8/2009 01:40:28), path: “Macintosh HD/private/var/run/ntp.drift”.
18/8/2009 05:04:28: 16 execution errors.
Completed: 441743 files, 77.6 GB
Performance: 634.7 MB/minute (694.7 copy, 584.2 compare)
Duration: 04:10:09 (00:00:03 idle/loading/preparing)