I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install:
parted_1.8.1-23.els.x86_64.rpm can NOT open
anyone know why?
Should I download it again from any good site?
If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4?
Thanks.
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I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install:
parted_1.8.1-23.els.x86_64.rpm can NOT open
anyone know why?
Should I download it again from any good site?
If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4?
Thanks.
Did you check that the DVD was good with mediacheck? md5sum'ed the ISO? No need to download again if the ISO is OK.
dennisk
On Tue, 2009-11-24 at 14:47 -0700, Dennis Kibbe wrote:
I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install:
parted_1.8.1-23.els.x86_64.rpm can NOT open
anyone know why?
Should I download it again from any good site?
If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4?
Thanks.
Did you check that the DVD was good with mediacheck? md5sum'ed the ISO? No need to download again if the ISO is OK.
dennisk
Also, burn at the slowest speed to ensure that there are no errors. I have had this problem and solved it by burning at a slow speed, although it will take a lot longer to burn the DVD.
Tait Clarridge wrote:
On Tue, 2009-11-24 at 14:47 -0700, Dennis Kibbe wrote:
I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install:
parted_1.8.1-23.els.x86_64.rpm can NOT open
anyone know why?
Should I download it again from any good site?
If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4?
Thanks.
Did you check that the DVD was good with mediacheck? md5sum'ed the ISO? No need to download again if the ISO is OK.
dennisk
Also, burn at the slowest speed to ensure that there are no errors. I have had this problem and solved it by burning at a slow speed, although it will take a lot longer to burn the DVD.
Burning at a slower speed usually does NOT increase burn quality. You may have a bad writer or bad DVD R's. Use DVD-R's for maximum compatibility.
Glenn
RedShift wrote:
Burning at a slower speed usually does NOT increase burn quality. You may have a bad writer or bad DVD R's. Use DVD-R's for maximum compatibility.
not quite. with modern high speed DVD burners, like 16X and such, burns faster than 8X are burned in a CAV mode (constant angular velocity) where the data transfer rate speeds up as it gets farther along on the disk. I've found the read error rate is significantly higher towards the end (outer tracks) of full DVDs burned this way, but disks burned at 8X are CLV (constant linear velocity), where the RPM drops as its burning to maintain a constant data rate, and on disks burned this way, I get far fewer read errors.
thus John R Pierce spake:
RedShift wrote:
Burning at a slower speed usually does NOT increase burn quality. You may have a bad writer or bad DVD R's. Use DVD-R's for maximum compatibility.
not quite. with modern high speed DVD burners, like 16X and such, burns faster than 8X are burned in a CAV mode (constant angular velocity) where the data transfer rate speeds up as it gets farther along on the disk. I've found the read error rate is significantly higher towards the end (outer tracks) of full DVDs burned this way, but disks burned at 8X are CLV (constant linear velocity), where the RPM drops as its burning to maintain a constant data rate, and on disks burned this way, I get far fewer read errors.
FWIW, speaking about Audio stuff one can actually *hear* it. Really. Here's some good information on speeds etc, too:
http://www.digitalfaq.com/guides/media/dvd-media-concepts.htm
HTH,
Timo
RedShift wrote:
Tait Clarridge wrote:
On Tue, 2009-11-24 at 14:47 -0700, Dennis Kibbe wrote:
I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install:
parted_1.8.1-23.els.x86_64.rpm can NOT open
anyone know why?
Should I download it again from any good site?
If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4?
Thanks.
Did you check that the DVD was good with mediacheck? md5sum'ed the ISO? No need to download again if the ISO is OK.
Also, burn at the slowest speed to ensure that there are no errors. I have had this problem and solved it by burning at a slow speed, although it will take a lot longer to burn the DVD.
Burning at a slower speed usually does NOT increase burn quality. You may have a bad writer or bad DVD R's. Use DVD-R's for maximum compatibility.
Sure it does. For example, what's the alleged speed of the writer... and what's the alleged speed of the DVD itself? I made a coaster or two, just in the last year (don't burn a lot of CD's or DVD's), and once I slowed down the writer, it came out fine.
mark
2009/11/24 mcclnx mcc mcclnx@yahoo.com.tw:
I just download CENTOS 5.4 DVD ISO X86_64 version from internet. I tried to install it on DELL server and get following error message before RPM start install:
parted_1.8.1-23.els.x86_64.rpm can NOT open
anyone know why?
Should I download it again from any good site?
If I install CENTOS 5.3 and use yum update, will it go to CENTOS 5.4?
As others have suggested, verify both that the ISO is good and that the burn is good. To verify the ISO, run md5sum against the ISO file:
md5sum centos_5.4-xx.x.x.iso
The checksum should match the ones posted on the CentOS site or your mirror. Look at the md5sum.txt file and compare to your computed checksum. For example:
92cab2977a58ce422130e5c655dc8513 CentOS-5.4-x86_64-bin-DVD.iso
If you have a bad ISO, the easiest way I've found to "repair" it is to use a torrent client. During the initial torrent download it will compute the error blocks and only copy those portions. Saves a bunch of time and guarantees a good download. In some places FTP will never complete successfully..
Once you have downloaded good iso, burn to disk at a slow speed. 2X usually works best for me. Once you burn you can also run md5sum against the physical DVD or use the built-in disk check in the initial part of the installation.
BTW, instead of burning the full DVD iso, I generally only burn the boot.iso from the images directory. This is a much smaller burn and less prone to error. I mount the actual DVD iso as a loopback mount on another server and point my installation to that other server via the network.
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Dennis Kibbe -
John R Pierce -
Kwan Lowe -
mark -
mcclnx mcc -
RedShift -
Tait Clarridge -
Timo Schoeler