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I have a system with dual boot (debian 8/ windows 8)
After i formatted a drive from windows 8 i'm unable to boot even from usb, always it says 'Unknown Filesystem'.

Now, I can only boot the linux by using grub commands like

set boot=(hd0,msdos1)
set prefix=(hd0,msdos1)/boot/grub
insmod normal
normal

I've tried to format the drives after booting the debian 8, this way. But, still i can't get into the system without grub commands.



Now how can i boot from usb & install a new OS removing all the partitions ?

closed as off-topic by Kevin Bowen, Videonauth, David Foerster, Eric Carvalho, muru May 17 '16 at 0:33

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Kevin Bowen, Videonauth, David Foerster, Eric Carvalho, muru
If this question can be reworded to fit the rules in the help center, please edit the question.

  • This is bordering on off topic, as it is not about Ubuntu... – Android Dev May 15 '16 at 16:13
1

After you successfully boot your debian, correct the grub configuration and install new grub. I have never used debian but I believe it is similar to Ubuntu, so sudo grub-install would probably be the right command, after you change the grub config files. Maybe take a look here Windows 10 upgrade led to grub rescue where is says how you correct Ubuntu grub configuration.

0

Your OS is Debian, not Ubuntu. Should ask your question here

OR ask your question on IRC: irc.debian.org on channel #debian

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