Hi, > Initial test with a CD-R and an HP Compaq 8510w are mixed. > It boots to GRUB, but it spins a long time blinking the HDD light displaying > nothing but "Welcome to GRUB". It eventually spits out "failure reading > sector 0x4f838 from 'hd31'." 'hd31' looks strange for HDD as well as for CD-ROM. Do have that many ? If it's about the CD drive: 0x4f838 = 325688 would be in 2048-byte-block range of boot-grub2-f36.iso which has 333555 such blocks. The ISO 9660 filesystem data range ends at 328317. The rest is the appended EFI partition. If GRUB reports in units of 512-byte blocks instead, then the failure would be at CD-ROM LBA 81422. You could checkread the CD-R (i assume at /dev/sr0) by xorriso -indev /dev/sr0 -check_media -- It is supposed to report something like this run with a DVD+RW: ... Volume id : 'Fedora-36-x86_64' xorriso : UPDATE : 32 blocks read in 3 seconds , 0.0xD xorriso : UPDATE : 2912 blocks read in 4 seconds , 4.3xD xorriso : UPDATE : 5824 blocks read in 5 seconds , 4.3xD ... xorriso : UPDATE : 329440 blocks read in 103 seconds , 5.5xD xorriso : UPDATE : 333216 blocks read in 104 seconds , 5.6xD xorriso : UPDATE : 333555 blocks read in 104 seconds = 4.7xD Media checks : lba , size , quality Media region : 0 , 333555 , + good Media region : 333555 , 1961549 , 0 untested Read errors would be reported with their SCSI error codes and block address. If suspicious periods of low reading speed are noticed, then "Media region" lines might appear with "quality" value "slow" or even "unreadable". If you deem the full output interesting enough for an examination, send it to me in private. I will then post here what i believe to see in it. Have a nice day :) Thomas _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
