Re: [SLUG] Copying a CD to disk image
I had the same problem, some cd's burn perfectly yet can't be read in some CD drives. I downloaded Simply Mepis because I lost my install CD, confirmed the md5 sum. I burnt it to a XLogic blank CD, silver colour, wouldn't boot. Some cd's would error on burning and become coasters. Burnt to a TDK gold CD still the same problem with the cd not being recognised. I finally went and bought a pack of 50 HP branded blank cd's at The Warehouse for $20, and have yet to have a problem with even one of them. Mepis really rocks as a distribution, the debian apt-get is rock solid compared to Mandrake/Red Hat rpm way of doing things. Chris - Original Message - From: Rocci [EMAIL PROTECTED] To: Slug slug@slug.org.au Sent: Thursday, January 27, 2005 9:39 AM Subject: Re: [SLUG] Copying a CD to disk image Brett Fenton wrote: sounds like you're out of luck. as a last resort, you could try mounting the cd, copying recursivley the contents to a temporary directory then using mkisofs to make the iso. fwiw. i've only ever had this problem on burnt disks. they appear fine in some cd devices and have difficulties in others. regards, brett On Thursday 27 January 2005 08:57, Peter Rundle wrote: Sluggers, I've always been able to make a copy of a cd or floppy onto the hard disk by using dd. I.E dd if=/dev/cdrom of=myimage.iso I've been trying to do this with some FC3 cd's but after copying about 630Mb the process starts throwing messages up onto the console about bad block read's. This goes on for several minutes and trying to kill the dd process doesn't seem to work, though it eventually dies. When I mount the resulting .iso images with -o loop they appear ok and I can see all the directories and file names but if I try to copy an .rpm from the mounted file system it's no good. So obviously the cd's are dud right! BUT! I've just done an install of a working system from the very same CD's and even ran through the little check media utility at the start which said the CD's were OK. Did you install this working system using the very same CDROM drive that you are using with dd ? Your problem may be related to media/hardware quality rather than data corruption. The drive you are using to do the dd with may simply not like that cd media. Just last night I was having problems reading my Q3/UrbanTerror CD using both a Sony a Mitsubishi CDROM drive. However the same disk worked perfectly fine in an Optorite CDROM. I've since copied that to another brand CD (TDK) and now all my workstations drives are happy and I can play UrT3.1 again :) - Rocci -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Copying a CD to disk image
Sluggers, I've always been able to make a copy of a cd or floppy onto the hard disk by using dd. I.E dd if=/dev/cdrom of=myimage.iso I've been trying to do this with some FC3 cd's but after copying about 630Mb the process starts throwing messages up onto the console about bad block read's. This goes on for several minutes and trying to kill the dd process doesn't seem to work, though it eventually dies. When I mount the resulting .iso images with -o loop they appear ok and I can see all the directories and file names but if I try to copy an .rpm from the mounted file system it's no good. So obviously the cd's are dud right! BUT! I've just done an install of a working system from the very same CD's and even ran through the little check media utility at the start which said the CD's were OK. What give's? Pete P.S I've tried using dd's bs=512, 1024 and 2048 but the result is unchanged. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Copying a CD to disk image
sounds like you're out of luck. as a last resort, you could try mounting the cd, copying recursivley the contents to a temporary directory then using mkisofs to make the iso. fwiw. i've only ever had this problem on burnt disks. they appear fine in some cd devices and have difficulties in others. regards, brett On Thursday 27 January 2005 08:57, Peter Rundle wrote: Sluggers, I've always been able to make a copy of a cd or floppy onto the hard disk by using dd. I.E dd if=/dev/cdrom of=myimage.iso I've been trying to do this with some FC3 cd's but after copying about 630Mb the process starts throwing messages up onto the console about bad block read's. This goes on for several minutes and trying to kill the dd process doesn't seem to work, though it eventually dies. When I mount the resulting .iso images with -o loop they appear ok and I can see all the directories and file names but if I try to copy an .rpm from the mounted file system it's no good. So obviously the cd's are dud right! BUT! I've just done an install of a working system from the very same CD's and even ran through the little check media utility at the start which said the CD's were OK. What give's? Pete P.S I've tried using dd's bs=512, 1024 and 2048 but the result is unchanged. -- Brett Fenton NetRegistry Pty Ltd ___ http://www.netregistry.com.au/ Tel: +61 2 96996099 | Fax: +61 2 96996088 PO Box 270 Broadway | NSW 2007, Australia Your Total Internet Business Services Provider Trusted by 10,000s of Oz Businesses Since 1997 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Copying a CD to disk image
Brett Fenton wrote: sounds like you're out of luck. as a last resort, you could try mounting the cd, copying recursivley the contents to a temporary directory then using mkisofs to make the iso. fwiw. i've only ever had this problem on burnt disks. they appear fine in some cd devices and have difficulties in others. regards, brett On Thursday 27 January 2005 08:57, Peter Rundle wrote: Sluggers, I've always been able to make a copy of a cd or floppy onto the hard disk by using dd. I.E dd if=/dev/cdrom of=myimage.iso I've been trying to do this with some FC3 cd's but after copying about 630Mb the process starts throwing messages up onto the console about bad block read's. This goes on for several minutes and trying to kill the dd process doesn't seem to work, though it eventually dies. When I mount the resulting .iso images with -o loop they appear ok and I can see all the directories and file names but if I try to copy an .rpm from the mounted file system it's no good. So obviously the cd's are dud right! BUT! I've just done an install of a working system from the very same CD's and even ran through the little check media utility at the start which said the CD's were OK. Did you install this working system using the very same CDROM drive that you are using with dd ? Your problem may be related to media/hardware quality rather than data corruption. The drive you are using to do the dd with may simply not like that cd media. Just last night I was having problems reading my Q3/UrbanTerror CD using both a Sony a Mitsubishi CDROM drive. However the same disk worked perfectly fine in an Optorite CDROM. I've since copied that to another brand CD (TDK) and now all my workstations drives are happy and I can play UrT3.1 again :) - Rocci -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
