Partition table missing from Linux shrunk .img- Win7 doesn't recognize
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I have been struggling with this issue.
- I was able to shrink my JeOS .img with the following tutorial using YUMI live Ubuntu mate 18.04 USB attached to my Windows 7 laptop:
https://softwarebakery.com/shrinking-images-on-linux
The resulting shrunk .img (1.58 GB from a 7.50 GB USB stick) saved on my laptop C drive, when burned via Etcher in Ubuntu mate Linux, is bootable in the TV box.
But when I insert this SD card (via USB adapter as usual) into my Win7 laptop it says: Not readable, would you like to format?
(When I used Etcher, I got a message: partition table not found, Continue? And I just chose Continue.)
- When I use above tutorial I actually see two partitions, .img1 for boot and .img2 for storage (userdata etc.), so I just repeated instructions for each, then concatenated the files:
$ cat .img1 img2 > .img
The .img1 and .img2 files under Ubuntu mate (where I did the shrink operation) appear as ?stl files, whereas the new .img file appears as raw file.
- So I think that this shrunk .img file needs a partition table.
***How do I achieve this so I can get a burn boot image on my SD card that is readable by Windows 7 (so I can change the device trees from the included folder)?
I ran testdisk on my Win7 laptop. It located the Linux distro on SD card as L (logical) [ STORAGE], but upon pressing p option, said, " Can't open filesystem. Filesystem seems damaged."
Before it said, " Partition table doesn't have the end mark 0xAA55."
Also, I tried to run from Windows cmd.exe ,
$ testdisk_win.exe /pathfile/*.img
but Windows doesn't recognize testdisk_win.exe !
Edit: Some more info...
The boot .img1 is fat 16, the Storage .img2 is ext4 so I formatted both to fat32 and also did the Check under gparted. Also used Ignore and Fix alternately. No difference.
So does this mean there is a problem with shrinking two images and then concatenating ?
linux command-line
asked Dec 10 at 17:59
shippy
11
add a comment |
I have been struggling with this issue.
- I was able to shrink my JeOS .img with the following tutorial using YUMI live Ubuntu mate 18.04 USB attached to my Windows 7 laptop:
https://softwarebakery.com/shrinking-images-on-linux
The resulting shrunk .img (1.58 GB from a 7.50 GB USB stick) saved on my laptop C drive, when burned via Etcher in Ubuntu mate Linux, is bootable in the TV box.
But when I insert this SD card (via USB adapter as usual) into my Win7 laptop it says: Not readable, would you like to format?
(When I used Etcher, I got a message: partition table not found, Continue? And I just chose Continue.)
- When I use above tutorial I actually see two partitions, .img1 for boot and .img2 for storage (userdata etc.), so I just repeated instructions for each, then concatenated the files:
$ cat .img1 img2 > .img
The .img1 and .img2 files under Ubuntu mate (where I did the shrink operation) appear as ?stl files, whereas the new .img file appears as raw file.
- So I think that this shrunk .img file needs a partition table.
***How do I achieve this so I can get a burn boot image on my SD card that is readable by Windows 7 (so I can change the device trees from the included folder)?
I ran testdisk on my Win7 laptop. It located the Linux distro on SD card as L (logical) [ STORAGE], but upon pressing p option, said, " Can't open filesystem. Filesystem seems damaged."
Before it said, " Partition table doesn't have the end mark 0xAA55."
Also, I tried to run from Windows cmd.exe ,
$ testdisk_win.exe /pathfile/*.img
but Windows doesn't recognize testdisk_win.exe !
Edit: Some more info...
The boot .img1 is fat 16, the Storage .img2 is ext4 so I formatted both to fat32 and also did the Check under gparted. Also used Ignore and Fix alternately. No difference.
So does this mean there is a problem with shrinking two images and then concatenating ?
linux command-line
asked Dec 10 at 17:59
shippy
11
Exactly what steps did you use to produceimg1andimg2from a single source image that contained multiple partitions? I think you now probably have either two disk images, each of which contains its own partition table, or two partition images, of which neither includes a partition table. Either way, just concatenating them makes no sense. Concatenating two disk images places only the first image's partition table into an useful position... and that partition table probably says that the whole disk ends at the endpoint of the first image.
– telcoM
Dec 11 at 8:41
add a comment |
I have been struggling with this issue.
- I was able to shrink my JeOS .img with the following tutorial using YUMI live Ubuntu mate 18.04 USB attached to my Windows 7 laptop:
https://softwarebakery.com/shrinking-images-on-linux
The resulting shrunk .img (1.58 GB from a 7.50 GB USB stick) saved on my laptop C drive, when burned via Etcher in Ubuntu mate Linux, is bootable in the TV box.
But when I insert this SD card (via USB adapter as usual) into my Win7 laptop it says: Not readable, would you like to format?
(When I used Etcher, I got a message: partition table not found, Continue? And I just chose Continue.)
- When I use above tutorial I actually see two partitions, .img1 for boot and .img2 for storage (userdata etc.), so I just repeated instructions for each, then concatenated the files:
$ cat .img1 img2 > .img
The .img1 and .img2 files under Ubuntu mate (where I did the shrink operation) appear as ?stl files, whereas the new .img file appears as raw file.
- So I think that this shrunk .img file needs a partition table.
***How do I achieve this so I can get a burn boot image on my SD card that is readable by Windows 7 (so I can change the device trees from the included folder)?
I ran testdisk on my Win7 laptop. It located the Linux distro on SD card as L (logical) [ STORAGE], but upon pressing p option, said, " Can't open filesystem. Filesystem seems damaged."
Before it said, " Partition table doesn't have the end mark 0xAA55."
Also, I tried to run from Windows cmd.exe ,
$ testdisk_win.exe /pathfile/*.img
but Windows doesn't recognize testdisk_win.exe !
Edit: Some more info...
The boot .img1 is fat 16, the Storage .img2 is ext4 so I formatted both to fat32 and also did the Check under gparted. Also used Ignore and Fix alternately. No difference.
So does this mean there is a problem with shrinking two images and then concatenating ?
linux command-line
asked Dec 10 at 17:59
shippy
11
I have been struggling with this issue.
- I was able to shrink my JeOS .img with the following tutorial using YUMI live Ubuntu mate 18.04 USB attached to my Windows 7 laptop:
https://softwarebakery.com/shrinking-images-on-linux
The resulting shrunk .img (1.58 GB from a 7.50 GB USB stick) saved on my laptop C drive, when burned via Etcher in Ubuntu mate Linux, is bootable in the TV box.
But when I insert this SD card (via USB adapter as usual) into my Win7 laptop it says: Not readable, would you like to format?
(When I used Etcher, I got a message: partition table not found, Continue? And I just chose Continue.)
- When I use above tutorial I actually see two partitions, .img1 for boot and .img2 for storage (userdata etc.), so I just repeated instructions for each, then concatenated the files:
$ cat .img1 img2 > .img
The .img1 and .img2 files under Ubuntu mate (where I did the shrink operation) appear as ?stl files, whereas the new .img file appears as raw file.
- So I think that this shrunk .img file needs a partition table.
***How do I achieve this so I can get a burn boot image on my SD card that is readable by Windows 7 (so I can change the device trees from the included folder)?
I ran testdisk on my Win7 laptop. It located the Linux distro on SD card as L (logical) [ STORAGE], but upon pressing p option, said, " Can't open filesystem. Filesystem seems damaged."
Before it said, " Partition table doesn't have the end mark 0xAA55."
Also, I tried to run from Windows cmd.exe ,
$ testdisk_win.exe /pathfile/*.img
but Windows doesn't recognize testdisk_win.exe !
Edit: Some more info...
The boot .img1 is fat 16, the Storage .img2 is ext4 so I formatted both to fat32 and also did the Check under gparted. Also used Ignore and Fix alternately. No difference.
So does this mean there is a problem with shrinking two images and then concatenating ?
linux command-line
linux command-line
asked Dec 10 at 17:59
shippy
11
asked Dec 10 at 17:59
shippy
11
edited Dec 11 at 7:51
asked Dec 10 at 17:59
shippy
11
asked Dec 10 at 17:59
shippy
11
asked Dec 10 at 17:59
shippy
11
11
Exactly what steps did you use to produceimg1andimg2from a single source image that contained multiple partitions? I think you now probably have either two disk images, each of which contains its own partition table, or two partition images, of which neither includes a partition table. Either way, just concatenating them makes no sense. Concatenating two disk images places only the first image's partition table into an useful position... and that partition table probably says that the whole disk ends at the endpoint of the first image.
– telcoM
Dec 11 at 8:41
add a comment |
Exactly what steps did you use to produceimg1andimg2from a single source image that contained multiple partitions? I think you now probably have either two disk images, each of which contains its own partition table, or two partition images, of which neither includes a partition table. Either way, just concatenating them makes no sense. Concatenating two disk images places only the first image's partition table into an useful position... and that partition table probably says that the whole disk ends at the endpoint of the first image.
– telcoM
Dec 11 at 8:41
Exactly what steps did you use to produce
img1 and img2 from a single source image that contained multiple partitions? I think you now probably have either two disk images, each of which contains its own partition table, or two partition images, of which neither includes a partition table. Either way, just concatenating them makes no sense. Concatenating two disk images places only the first image's partition table into an useful position... and that partition table probably says that the whole disk ends at the endpoint of the first image.– telcoM
Dec 11 at 8:41
Exactly what steps did you use to produce
img1 and img2 from a single source image that contained multiple partitions? I think you now probably have either two disk images, each of which contains its own partition table, or two partition images, of which neither includes a partition table. Either way, just concatenating them makes no sense. Concatenating two disk images places only the first image's partition table into an useful position... and that partition table probably says that the whole disk ends at the endpoint of the first image.– telcoM
Dec 11 at 8:41
add a comment |
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Exactly what steps did you use to produce
img1andimg2from a single source image that contained multiple partitions? I think you now probably have either two disk images, each of which contains its own partition table, or two partition images, of which neither includes a partition table. Either way, just concatenating them makes no sense. Concatenating two disk images places only the first image's partition table into an useful position... and that partition table probably says that the whole disk ends at the endpoint of the first image.– telcoM
Dec 11 at 8:41