dvd backup problem

I have stored approx 3000 jpegs on dvds using SONIC RECORD. They are in
hundreds of folders and after burning each dvd I have picked two folders
from each dvd and opened the files to make sure the images are readable. So
far so good, but today I discovered that there are problems with the folders
containing more than about 100 jpegs (each of about 4MB). The problem is
that I can see a list of each file in the folder on the screen and can also
view the details such as file size, clicking the icons button also works ok,
but thumbnails does not work. Clicking thumbnails gets me about 3/4 of the
images visible and then the computer locks. I also used Irfan View to view
the images and find that after about 20 images everything just stops.

I have tried this on two different laptops, one of them with XP and the
other with XP PROFF, and the same problem occurs.

I did attempt to copy the contents of one of the dvds back to the laptop and
everything was going well until the whole process stopped and a message came
up saying "cyclic redunduncy error" with details of one particular file. I
stopped the copy process and tried to open that file, the image filled half
the screen then everything stopped. I put the dvd in another laptop and it
opened ok.

Finally, I have examined several dvds and the same problem seems to occur on
all the dvds, basically, any folder with more than 1bout 100 jpegs gives me
some bother.

What am I supposed to do. The images are also on portable drives but I
would like to think they are also on something a bit more reliable.

jameson wrote:

Finally, I have examined several dvds and the same problem seems to occur on
all the dvds, basically, any folder with more than 1bout 100 jpegs gives me
some bother.

What am I supposed to do. The images are also on portable drives but I
would like to think they are also on something a bit more reliable.

Don't go thinking DVD-Rs are reliable. Don't rely on any single means
of storing valuable digital data. Sounds like you've done the right
thing by keeping duplicates on portable drives too. Any storage will
degrade over time, make regular verified copies so at least you get
early warning of bit-rot and know that your old media can be read on
your current computer.

I would definitaly recommend getting a USB HD for backups. They are a
reasonable price these days and you can always keep them offsite too,
although not as small as DVD's.

Given the low price of DVD's I don't even bother with DVD-RW,
preferring to backup nightly to my USB drive and then monthly to DVD
and storing offsite.

Actually I have 2 USB HD's - 1 backs up my main PC every night (holds
over a month of backups), the other I bought for offsite storage - I
will take a full backup of all my systems prior to a major storm (we
live in South Florida) and keep it offsite just in case the worst case
scenario happens.

It's now under $100 for a 250gb USB HD - very affordable given the cost
of losing all your photos.

"jameson" wrote in message
...
I have stored approx 3000 jpegs on dvds using SONIC RECORD. They are in
hundreds of folders and after burning each dvd I have picked two folders
from each dvd and opened the files to make sure the images are readable.
So far so good, but today I discovered that there are problems with the
folders containing more than about 100 jpegs (each of about 4MB). The
problem is that I can see a list of each file in the folder on the screen
and can also view the details such as file size, clicking the icons button
also works ok, but thumbnails does not work. Clicking thumbnails gets me
about 3/4 of the images visible and then the computer locks. I also used
Irfan View to view the images and find that after about 20 images
everything just stops.

I have tried this on two different laptops, one of them with XP and the
other with XP PROFF, and the same problem occurs.

I did attempt to copy the contents of one of the dvds back to the laptop
and everything was going well until the whole process stopped and a
message came up saying "cyclic redunduncy error" with details of one
particular file. I stopped the copy process and tried to open that file,
the image filled half the screen then everything stopped. I put the dvd
in another laptop and it opened ok.

Finally, I have examined several dvds and the same problem seems to occur
on all the dvds, basically, any folder with more than 1bout 100 jpegs
gives me some bother.

What am I supposed to do. The images are also on portable drives but I
would like to think they are also on something a bit more reliable.

Neither DVDs nor CDs are especially reliable these days (unless you get a
gold disk). I have about that many stored on both DVD-R and DVD-RW.
However, the goal is to put them on a portable drive because such devices
are still more reliable than any optical disk.

Jim

I am using Uplus sync for automatic usb backup daily. It's fine to work
with external drive. It's also important to backup to CDR twice a month
for me. I think this is a safe way for my data.
You can find uplus sync on http://www.uplussync.com

poddys wrote:
I would definitaly recommend getting a USB HD for backups. They are a
reasonable price these days and you can always keep them offsite too,
although not as small as DVD's.

Given the low price of DVD's I don't even bother with DVD-RW,
preferring to backup nightly to my USB drive and then monthly to DVD
and storing offsite.

Actually I have 2 USB HD's - 1 backs up my main PC every night (holds
over a month of backups), the other I bought for offsite storage - I
will take a full backup of all my systems prior to a major storm (we
live in South Florida) and keep it offsite just in case the worst case
scenario happens.

It's now under $100 for a 250gb USB HD - very affordable given the cost
of losing all your photos.

jameson wrote:
I have stored approx 3000 jpegs on dvds using SONIC RECORD. They are in
hundreds of folders and after burning each dvd I have picked two folders
from each dvd and opened the files to make sure the images are readable. So
far so good, but today I discovered that there are problems with the folders
containing more than about 100 jpegs (each of about 4MB). The problem is
that I can see a list of each file in the folder on the screen and can also
view the details such as file size, clicking the icons button also works ok,
but thumbnails does not work. Clicking thumbnails gets me about 3/4 of the
images visible and then the computer locks. I also used Irfan View to view
the images and find that after about 20 images everything just stops.

snip the rest

I wouldn't blame the DVDs just yet. What program did you use to copy
the files to the DVD? Some copy/backup utilities don't like handling a
lot of files, and after a number have been copied you will start to get
errors.

It might be worth trying another utility, like xxcopy,
http://www.xxcopy.com which I use for a complete file-by-file backup of
my C: drive, about 20-odd gigs and numerous folders, a typical C: drive.
It's very fast, has 200 commands to tailor the backup, but its
command-driven which may put you off.

Colin D.

--
Posted via a free Usenet account from http://www.teranews.com

ColinD wrote:
jameson wrote:
I have stored approx 3000 jpegs on dvds using SONIC RECORD. They are
in hundreds of folders and after burning each dvd I have picked two
folders from each dvd and opened the files to make sure the images are
readable. So far so good, but today I discovered that there are
problems with the folders containing more than about 100 jpegs (each
of about 4MB). The problem is that I can see a list of each file in
the folder on the screen and can also view the details such as file
size, clicking the icons button also works ok, but thumbnails does not
work. Clicking thumbnails gets me about 3/4 of the images visible and
then the computer locks. I also used Irfan View to view the images
and find that after about 20 images everything just stops.

snip the rest

I wouldn't blame the DVDs just yet. What program did you use to copy
the files to the DVD? Some copy/backup utilities don't like handling a
lot of files, and after a number have been copied you will start to get
errors.

It might be worth trying another utility, like xxcopy,
http://www.xxcopy.com which I use for a complete file-by-file backup of
my C: drive, about 20-odd gigs and numerous folders, a typical C: drive.
It's very fast, has 200 commands to tailor the backup, but its
command-driven which may put you off.

Colin D.

I don't know how xxcopy can backup direct to dvd unless the op is using
packet writing. I don't see packet writing mentioned. If op formatted
the disks he could use xxcopy, I assume his Sonic install included dla.
I do not know what his causing his problem. Does he have verify after
write set.
Dave Cohen

Dave Cohen wrote:

ColinD wrote:

edited, for brevity

It might be worth trying another utility, like xxcopy,
http://www.xxcopy.com which I use for a complete file-by-file backup of
my C: drive, about 20-odd gigs and numerous folders, a typical C: drive.
It's very fast, has 200 commands to tailor the backup, but its
command-driven which may put you off.

Colin D.

I don't know how xxcopy can backup direct to dvd unless the op is using
packet writing. I don't see packet writing mentioned. If op formatted
the disks he could use xxcopy, I assume his Sonic install included dla.
I do not know what his causing his problem. Does he have verify after
write set.
Dave Cohen


Hello, Dave:

I'd never entrust any of my data, to repulsive packet writing software.
DVD-RAM doesn't require such a kludge, and hence, is the safest choice
among DVD (and CD) formats.


Cordially,
John Turco

poddys wrote:

I would definitaly recommend getting a USB HD for backups. They are a
reasonable price these days and you can always keep them offsite too,
although not as small as DVD's.

Given the low price of DVD's I don't even bother with DVD-RW,
preferring to backup nightly to my USB drive and then monthly to DVD
and storing offsite.

Actually I have 2 USB HD's - 1 backs up my main PC every night (holds
over a month of backups), the other I bought for offsite storage - I
will take a full backup of all my systems prior to a major storm (we
live in South Florida) and keep it offsite just in case the worst case
scenario happens.

It's now under $100 for a 250gb USB HD - very affordable given the cost
of losing all your photos.


Hello, poddys:

Unfortunately, many of these USB hard disks are poorly cooled -- and
therefore, dangerously unreliable. Certain brands are more notorious
than others, with Maxtor being the alleged leader of this dubious pack.

Visit news:comp.sys.ibm.pc.hardware.storage, and grow wiser. g


Cordially,
John Turco

On 21 Sep 2006 00:08:23 EDT, John Turco wrote:

Hello, poddys:

Unfortunately, many of these USB hard disks are poorly cooled -- and
therefore, dangerously unreliable. Certain brands are more notorious
than others, with Maxtor being the alleged leader of this dubious pack.

Visit news:comp.sys.ibm.pc.hardware.storage, and grow wiser. g

Another solution to the cooling problem is to get the housing
seperate, then install whatever drive you want to.
There are any number (many!) of good housings with active cooling
available.
--
Bill Funk
replace "g" with "a"