hda == IDE primary master
hdb == IDE primary slave
hdc == IDE secondary master
hdd == IDE secondary slave
You may see hde and so on if you have additional IDE controllers or set SATA to IDE mode
sda, sdb, sdc and so on are SATA and USB devices. Also some SCSI devices can get name like this, but more often (like optical drives on JMicron IDE controller on latest Intel motherboards) they are sr0, sr1..
If you have two SATA drives (one on 0 port and one on 2 port) and USB Flash, then 0 will be sda, 2 will be sdb and flash will be sdc.
Kinda complicated, but searching under Windows, which letter was assigned to your previously E: drive or which from five CD/DVDs is belonging to Alcohol is much more fun