I've tried 'Disks' alias gnome-disks in Lubuntu 14.04.1 and Vivid. I could make it create an iso file from a partition, but not from the whole drive. Trying from the whole drive gave me an error both running as a regular user and with sudo. (I tested with a Tiny Core iso file, which is small so it was fast.)
When I restored from the image of the partition I got a working boot drive. (I cloned the Ubuntu mini.iso in between so that the pendrive was changed.) I think this is not logical (and not corresponding to how dd is used). Restoring a partition should not restore the whole drive, but I guess it is intended to work this way. I could make it flash, clone alias 'restore' a boot USB drive from another iso file (I tested with the Ubuntu mini.iso (because it is small so it was fast). -o- Conclusion: I'm glad that I learned about this feature of 'Disks'. It is certainly possible to use in order to make a USB boot drive. There is an extra 'final warning window', so it should be safe enough to use. And best of all, it offers a working solution, when the Startup Disk Creator suffers from this really bad bug (# 1325801) plus several minor bugs. -o- But of course, I still think that my mkusb is better ;-) One important extra feature of mkusb is the ability to use general compressed image files (an iso file often contains the compressed container squashfs, but is not itself compressed). Another extra feature of mkusb is the ability to check if the content of the iso file matches that of the pendrive, and suggest updating for iso-testing. And there are several informative windows including a final warning with red background. -- You received this bug notification because you are a member of Ubuntu Kylin Members, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1325801 Title: failed to boot from USB disk with error: gfxboot.c32: not a COM32R Image boot: Status in Ubuntu CD image build software: New Status in Ubuntu Kylin: Triaged Status in “usb-creator” package in Ubuntu: Triaged Status in “usb-creator” source package in Lucid: Triaged Status in “usb-creator” source package in Precise: Triaged Status in “usb-creator” source package in Trusty: Triaged Status in “usb-creator” source package in Utopic: Triaged Bug description: 系 统：UK 14.10 6-2 dailybuild 32 位 机器型号：ｄｅｌｌ Ｉｎｓｐｉｒｏｎ－５６０ｓ 现 象：用Ｕ盘制作启动盘，不能启动，提示信息：ｇfxboot.c32: not a COM32R Image boot: 见附件图片 this bug is similar with Bug #645818, but we cannot confirm whether they are the same. If we type "live" and press enter, we can enter live mode. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-cdimage/+bug/1325801/+subscriptions -- Mailing list: https://launchpad.net/~ubuntukylin-members Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntukylin-members More help : https://help.launchpad.net/ListHelp
