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> On Nov 29, 2015, at 4:25 AM, Pascal Hambourg <pas...@plouf.fr.eu.org> wrote: > > aman nangia a écrit : >> hi, >> >> can hot-add of new disk be recognized under rescue mode when booted >> from linux dvd by any chance? (bcz we were able to see the data from the >> boot drive after mounting it to /b, thought to back up the data. The >> data is ~80-90gb and thought to insert a new disk in front > > What do you meand by "insert in front" ? What kind of disk is it ? 146gb sas (2.5" drive). There were 2 empty slots in the hp gen7 system in the front. I inserted this spare new disk in one of the slots. > Is the host controller hot-swap capable ? If it is a SATA disk,it may > require to run in AHCI mode to enable hot-swap. > >> But the problem is that the max size of any file when written to usb is >> approx 4.2gb only > > USB has nothing to do with file size limits. It all depends on the > filesystem. FAT limits files to about 4 Gio with 512-byte sectors. NTFS > and ext4 have a much higher limit. > Will try ntfs format in the usb.