LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > 4MLinux
User Name
Password
4MLinux This forum is for the discussion of 4MLinux.

Notices


Reply
  Search this Thread
Old 10-10-2021, 11:44 PM   #1
longpanda
LQ Newbie
 
Registered: Oct 2021
Posts: 3

Rep: Reputation: Disabled
Smile 4MLinux-37.1-64bit.iso can not boot in UEFI mode from CD/DVD


I download 4MLinux-37.1-64bit.iso and connect it directly to a VM(VMWARE), but it can not boot in UEFI mode from CD/DVD.
The ISO file doesn't contain eltorito entry for UEFI mode.
I hope it can be fixed in the future release.
 
Old 10-13-2021, 02:20 PM   #2
zk1234
4MLinux Maintainer
 
Registered: Oct 2010
Location: Poland
Distribution: 4MLinux, Slackware
Posts: 1,200

Rep: Reputation: 217Reputation: 217Reputation: 217
Hi,

4MLinux should support UEFI on real machines. 4MLinux' UEFI also works well in Virtual Box, which is the only VM used occasionally by me. I do not use VMWARE at all, so I do not even try to make 4MLinux compatible with this VM.

.

Last edited by zk1234; 10-13-2021 at 02:24 PM.
 
Old 10-17-2021, 08:18 PM   #3
longpanda
LQ Newbie
 
Registered: Oct 2021
Posts: 3

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by zk1234 View Post
Hi,

4MLinux should support UEFI on real machines. 4MLinux' UEFI also works well in Virtual Box, which is the only VM used occasionally by me. I do not use VMWARE at all, so I do not even try to make 4MLinux compatible with this VM.

.
I have an old Thinkpad T420 which has an physical optical drive.
So I burn the ISO file to an empty DVD and boot it in UEFI mode. It can not boot.
For an ISO file, just put an EFI directory in the root is not enough for UEFI boot.
The ISO file should add an eltorito entry for UEFI mode to make it compatible with UEFI mode.
Most type of Linux distros(e.g. Debian/Redhat/Suse/Arch ...) are in such way.
If you use mkisofs to create the ISO file, just add options like follows:
Code:
mkisofs xxxxx -eltorito-alt-boot -e EFI/boot/efi.img
So I hope you can add such option to make 4M Linux more standard and compatible.
 
1 members found this post helpful.
Old 10-19-2021, 04:50 PM   #4
zk1234
4MLinux Maintainer
 
Registered: Oct 2010
Location: Poland
Distribution: 4MLinux, Slackware
Posts: 1,200

Rep: Reputation: 217Reputation: 217Reputation: 217
Hi,

The eltorito option from your post has been used to create the 4MLinux ISO image for a long time. My guess is that the problem is related to the way how the isohybrid tool is applied by me. I promise to investigate this issue in the nearest future.

Sorry for my late reply

.

Last edited by zk1234; 10-19-2021 at 04:55 PM.
 
Old 10-21-2021, 02:02 AM   #5
longpanda
LQ Newbie
 
Registered: Oct 2021
Posts: 3

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by zk1234 View Post
Hi,

The eltorito option from your post has been used to create the 4MLinux ISO image for a long time. My guess is that the problem is related to the way how the isohybrid tool is applied by me. I promise to investigate this issue in the nearest future.

Sorry for my late reply

.
OK.

I attach an isoboot tool and if you want you can use it to check the ISO file.
Code:
mv isoboot.log isoboot
chmod +x isoboot
isoboot  xxx.iso
Bellow is the check result for 4MLinux-37.1-64bit.iso and ubuntu-20.04.1-desktop-amd64.iso
Code:
[root@Host Test]# isoboot 4MLinux-37.1-64bit.iso

============= EL TORITO Boot Info===========
szBootSystemId    : EL TORITO SPECIFICATION
uiBootCatlogStart : 171

==========EL TORITO Validation Entry==========
ID         : 01
ucPlatID   : 0 (0:x86  1:PowerPC  2:Mac  EF:EFI System Partition)
szID       : *Empty*
usCheckSum : 0x55AA
ucData55   : 0x55
ucDataAA   : 0xAA
CalcChkSum : 0 (Must be 0)

==========EL TORITO Initial/Default Entry==========
ID            : 0x88(0x88:Bootable, 0x00:Not Bootable)
ucBootMedia   : 0x00 (No Emulation)
usLoadSegment : 0x0000
ucSystemType  : 0
usSectorCount : 4
uiLoadRBA     : 380
BootFile      : /boot/isolinux/isolinux.bin

[root@Host Test]# isoboot ubuntu-20.04.1-desktop-amd64.iso

============= EL TORITO Boot Info===========
szBootSystemId    : EL TORITO SPECIFICATION
uiBootCatlogStart : 361

==========EL TORITO Validation Entry==========
ID         : 01
ucPlatID   : 0 (0:x86  1:PowerPC  2:Mac  EF:EFI System Partition)
szID       : *Empty*
usCheckSum : 0x55AA
ucData55   : 0x55
ucDataAA   : 0xAA
CalcChkSum : 0 (Must be 0)

==========EL TORITO Initial/Default Entry==========
ID            : 0x88(0x88:Bootable, 0x00:Not Bootable)
ucBootMedia   : 0x00 (No Emulation)
usLoadSegment : 0x0000
ucSystemType  : 0
usSectorCount : 4
uiLoadRBA     : 91005
BootFile      : /isolinux/isolinux.bin

==========EL TORITO Section Header Entry==========
ID            : 0x91(0x90: Continue Header follows   0x91: Final Header)
ucPlatID      : 0xEF (0:x86  1:PowerPC  2:Mac  EF:EFI System Partition)
usSecEntryNum : 1
szId          :

==========EL TORITO Section Entry==========
ucBootId      : 0x88(0x88:Bootable, 0x00:Not Bootable)
ucBootMedia   : 0x00 (No Emulation)
usLoadSegment : 0000
ucSystemType  : 0
usSectorCount : 7936
uiLoadRBA     : 1254348
BootFile      : /boot/grub/efi.img
ucCriteriaType: 0
aucCriteria   : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[root@CENTOS212 IMG]#
Attached Files
File Type: log isoboot.log (73.0 KB, 3 views)
 
Old 12-31-2021, 02:32 PM   #6
zk1234
4MLinux Maintainer
 
Registered: Oct 2010
Location: Poland
Distribution: 4MLinux, Slackware
Posts: 1,200

Rep: Reputation: 217Reputation: 217Reputation: 217
@longpanda
I have been using Ventoy lately. It's really very good. Ventoy will be available as a downloadable extension in 4MLinux 39.0 STABLE.

.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
UEFI Class 3 :: To use UEFI, or not to use UEFI? jheengut Slackware 19 12-30-2020 09:24 AM
[SOLVED] Trying to boot Ubuntu in UEFI mode, UEFI doesn't recognize boot devices Sarcutus Ubuntu 11 01-11-2019 07:14 PM
4MLinux 23.3 ISO does not boot, USB-stick does not boot waldmattis 4MLinux 8 02-04-2018 07:20 AM
LXer: Final 4MLinux and 4MLinux Allinone Edition 12.0 Released with PAE Support LXer Syndicated Linux News 0 05-10-2015 12:56 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > 4MLinux

All times are GMT -5. The time now is 02:18 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration