your stage1 of the GRUB is installed in MBR, while stage2 is in external USB HDD. so, without the external USB HDD plugged in GRUB won't be able to get into its stage2 (which does the majority of GRUB's magic).
**installing GRUB on the external disk would still give you no solutions !! On 9/30/07, Puneet Lakhina <[EMAIL PROTECTED]> wrote: > > Hi, > After successfully installing Ubuntu 7.04 on my external USB HDD, I am > facing a problem. > GRUB is installed on my primary hard disk. SO when i boot without having > plugged in the USB Hard disk, i get the following error. > GRUB Loading please wait.. > Error 21 > > After looking up what error 21 means i found out it means that a disk > could > not be found. Is there a way to circumvent this problem? Should i install > GRUB on the secondary disk, and remove GRUb from this disk? That seems > like > the better solution but I dont really know how to go about just installing > GRUB on my USB HDD and keeping my existing Ubuntu Installation. > > -- > Puneet > _______________________________________________ > ilugd mailinglist -- ilugd@lists.linux-delhi.org > http://frodo.hserus.net/mailman/listinfo/ilugd > Next Event: http://freed.in - September 28-29, 2007 > Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi > http://www.mail-archive.com/ilugd@lists.linux-delhi.org/ > -- Sahil MCA(SE) USIT _______________________________________________ ilugd mailinglist -- ilugd@lists.linux-delhi.org http://frodo.hserus.net/mailman/listinfo/ilugd Next Event: http://freed.in - September 28-29, 2007 Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi http://www.mail-archive.com/ilugd@lists.linux-delhi.org/